#738CFB
Closest named color: Lavender Blue (#8B88F8). oklch(67.3% 0.166 271.7), rgb(115, 140, 251).
Aa
Black text reads best on this color (6.87:1).
About this color
#738CFB is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.166 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Lavender Blue (#8B88F8), ΔE 0.032 away. Black text reads best on it, at 6.87:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Lavender Blue (#8B88F8) |
| Black text | 6.87:1 |
| White text | 3.05:1 |
Values
| HEX | #738CFB |
| RGB | rgb(115, 140, 251) |
| HSL | hsl(229, 94%, 72%) |
| OKLCH | oklch(67.3% 0.166 271.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #738CFB | 3.05:1 | AA large text | Lc -62.6 | Content text, not long reading |
| Black text on #738CFB | 6.87:1 | AA | Lc 46.9 | Large or bold text, headings |
| #738CFB text on white | 3.05:1 | AA large text | Lc 57.2 | Large or bold text, headings |
| #738CFB text on black | 6.87:1 | AA | Lc -44.6 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 400.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FF
oklch(93.5% 0.031 271.7)
-
Step 200
200
#CCD8FF
oklch(88.6% 0.055 271.8)
-
Step 300
300
#AABDFF
oklch(80.8% 0.096 271.7)
-
Step 400
400 (this color)
#738CFB
oklch(67.3% 0.166 271.7)
-
Step 500
500
#627AFF
oklch(63.1% 0.198 271.8)
-
Step 600
600
#4A5BF7
oklch(55.6% 0.23 271.7)
-
Step 700
700
#3C49D7
oklch(49.1% 0.214 271.6)
-
Step 800
800
#313DAE
oklch(42.7% 0.178 271.7)
-
Step 900
900
#2A3689
oklch(37.6% 0.138 271.8)
-
Step 950
950
#182150
oklch(27% 0.087 271.3)
#738CFB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #5B9AFF | 0.040 |
| Deuteranopia (no green cones) | #4A8EF9 | 0.042 |
| Tritanopia (no blue cones) | #29A4B7 | 0.148 |
| Achromatopsia (no color) | #939393 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #738CFB
#738CFB
oklch(67.3% 0.166 271.7)
- #B59200
#B59200
oklch(67.3% 0.138 91.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #738CFB, closest first.
No curated palette has a color within ΔE 0.04 of #738CFB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lavender Blue #8B88F8 ΔE 0.032
- Soft Blue #6488EA ΔE 0.033
- Cornflower Blue #6495ED ΔE 0.037
- Periwinkle #8E82FE ΔE 0.041
- Perrywinkle #8F8CE7 ΔE 0.046
- Cornflower #6A79F7 ΔE 0.050
- Chefchaouen Blue #4895EF ΔE 0.051
- Periwinkle Blue #8F99FB ΔE 0.052
Use #738CFB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.