#236F9E
Closest named color: Ocean Blue (#03719C). oklch(51.8% 0.104 240.7), rgb(35, 111, 158).
Aa
White text reads best on this color (5.47:1).
About this color
#236F9E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.104 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.013 away. White text reads best on it, at 5.47:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.83:1 |
| White text | 5.47:1 |
Values
| HEX | #236F9E |
| RGB | rgb(35, 111, 158) |
| HSL | hsl(203, 64%, 38%) |
| OKLCH | oklch(51.8% 0.104 240.7) |
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 #236F9E | 5.47:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #236F9E | 3.83:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #236F9E text on white | 5.47:1 | AA | Lc 77.0 | Fine for body text |
| #236F9E text on black | 3.83:1 | AA large text | Lc -24.8 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CADCEA
oklch(88.5% 0.027 241.2)
-
Step 300
300
#A4C6DE
oklch(81% 0.05 239)
-
Step 400
400
#72A7CE
oklch(70.6% 0.08 241.2)
-
Step 500
500
#4A91C1
oklch(63.1% 0.102 240.6)
-
Step 600
600
#277AAE
oklch(55.5% 0.112 241.1)
-
Step 700
700 (this color)
#236F9E
oklch(51.8% 0.104 240.7)
-
Step 800
800
#185479
oklch(42.7% 0.086 240.7)
-
Step 900
900
#1B4662
oklch(37.8% 0.067 240.5)
-
Step 950
950
#112939
oklch(27% 0.042 240.1)
#236F9E 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) | #5970A0 | 0.053 |
| Deuteranopia (no green cones) | #48649D | 0.042 |
| Tritanopia (no blue cones) | #007B7F | 0.071 |
| Achromatopsia (no color) | #696969 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #236F9E
#236F9E
oklch(51.8% 0.104 240.7)
- #935920
#935920
oklch(51.9% 0.104 61)
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 #236F9E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.013
- Muted Blue #3B719F ΔE 0.020
- Sea Blue #047495 ΔE 0.026
- Flat Blue #3C73A8 ΔE 0.029
- Peacock Blue #016795 ΔE 0.031
- Nice Blue #107AB0 ΔE 0.037
- Dull Blue #49759C ΔE 0.039
- French Blue #436BAD ΔE 0.039
Use #236F9E 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.