#738FF4
Closest named color: Cornflower Blue (#6495ED). oklch(67.5% 0.153 270.2), rgb(115, 143, 244).
Aa
Black text reads best on this color (6.96:1).
About this color
#738FF4 is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.153 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.025 away. Black text reads best on it, at 6.96:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.96:1 |
| White text | 3.01:1 |
Values
| HEX | #738FF4 |
| RGB | rgb(115, 143, 244) |
| HSL | hsl(227, 85%, 70%) |
| OKLCH | oklch(67.5% 0.153 270.2) |
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 #738FF4 | 3.01:1 | AA large text | Lc -62.1 | Content text, not long reading |
| Black text on #738FF4 | 6.96:1 | AA | Lc 47.3 | Large or bold text, headings |
| #738FF4 text on white | 3.01:1 | AA large text | Lc 56.7 | Large or bold text, headings |
| #738FF4 text on black | 6.96:1 | AA | Lc -45.1 | Large or bold text, headings |
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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CBD8FD
oklch(88.4% 0.053 270)
-
Step 300
300
#A9BEFF
oklch(80.9% 0.095 270.4)
-
Step 400
400 (this color)
#738FF4
oklch(67.5% 0.153 270.2)
-
Step 500
500
#5E7CFE
oklch(63.2% 0.195 270.2)
-
Step 600
600
#4760ED
oklch(55.5% 0.213 270.2)
-
Step 700
700
#3A4ECE
oklch(49% 0.198 270.4)
-
Step 800
800
#2F41A7
oklch(42.7% 0.164 270.2)
-
Step 900
900
#293984
oklch(37.8% 0.127 270.1)
-
Step 950
950
#18224D
oklch(27% 0.08 270.4)
#738FF4 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) | #659AF8 | 0.030 |
| Deuteranopia (no green cones) | #568FF2 | 0.032 |
| Tritanopia (no blue cones) | #32A5B6 | 0.136 |
| Achromatopsia (no color) | #949494 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #738FF4
#738FF4
oklch(67.5% 0.153 270.2)
- #B79200
#B79200
oklch(67.5% 0.138 90.6)
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 #738FF4, closest first.
No curated palette has a color within ΔE 0.04 of #738FF4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.025
- Soft Blue #6488EA ΔE 0.030
- Lavender Blue #8B88F8 ΔE 0.035
- Perrywinkle #8F8CE7 ΔE 0.040
- Chefchaouen Blue #4895EF ΔE 0.045
- Periwinkle Blue #8F99FB ΔE 0.047
- Periwinkle #8E82FE ΔE 0.049
- Dark Sky Blue #448EE4 ΔE 0.055
Use #738FF4 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.