#738FDB
Closest named color: Cornflower Blue (#6495ED). oklch(66.1% 0.118 267.8), rgb(115, 143, 219).
Aa
Black text reads best on this color (6.68:1).
About this color
#738FDB is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.118 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.031 away. Black text reads best on it, at 6.68:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.68:1 |
| White text | 3.14:1 |
Values
| HEX | #738FDB |
| RGB | rgb(115, 143, 219) |
| HSL | hsl(224, 59%, 65%) |
| OKLCH | oklch(66.1% 0.118 267.8) |
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 #738FDB | 3.14:1 | AA large text | Lc -63.8 | Content text, not long reading |
| Black text on #738FDB | 6.68:1 | AA | Lc 45.7 | Large or bold text, headings |
| #738FDB text on white | 3.14:1 | AA large text | Lc 58.4 | Large or bold text, headings |
| #738FDB text on black | 6.68:1 | AA | Lc -43.3 | 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 500.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D0D9EF
oklch(88.5% 0.032 268)
-
Step 300
300
#B0C0E7
oklch(80.9% 0.058 267.6)
-
Step 400
400
#879FDB
oklch(70.7% 0.092 267.3)
-
Step 500
500 (this color)
#738FDB
oklch(66.1% 0.118 267.8)
-
Step 600
600
#536EBE
oklch(55.6% 0.128 268)
-
Step 700
700
#435CA4
oklch(49.1% 0.119 267.5)
-
Step 800
800
#374B85
oklch(42.6% 0.1 267.7)
-
Step 900
900
#303F6A
oklch(37.6% 0.076 268.1)
-
Step 950
950
#1C253E
oklch(26.9% 0.049 268)
#738FDB 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) | #7396DE | 0.018 |
| Deuteranopia (no green cones) | #688DD9 | 0.015 |
| Tritanopia (no blue cones) | #499FAB | 0.106 |
| Achromatopsia (no color) | #919191 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #738FDB
#738FDB
oklch(66.1% 0.118 267.8)
- #B18D2E
#B18D2E
oklch(66% 0.118 87.3)
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 #738FDB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.031
- Soft Blue #6488EA ΔE 0.037
- Perrywinkle #8F8CE7 ΔE 0.043
- Chefchaouen Blue #4895EF ΔE 0.049
- Dark Sky Blue #448EE4 ΔE 0.049
- Faded Blue #658CBB ΔE 0.052
- Lavender Blue #8B88F8 ΔE 0.059
- Periwinkle Blue #8F99FB ΔE 0.065
Use #738FDB 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.