#234255
Closest named color: Charcoal (#264653). oklch(36.4% 0.049 237.2), rgb(35, 66, 85).
Aa
White text reads best on this color (10.59:1).
About this color
#234255 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.049 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.015 away. White text reads best on it, at 10.59:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.98:1 |
| White text | 10.59:1 |
Values
| HEX | #234255 |
| RGB | rgb(35, 66, 85) |
| HSL | hsl(203, 42%, 24%) |
| OKLCH | oklch(36.4% 0.049 237.2) |
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 #234255 | 10.59:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #234255 | 1.98:1 | Fails | Lc 9.4 | Not readable |
| #234255 text on white | 10.59:1 | AAA | Lc 94.5 | Preferred for body text |
| #234255 text on black | 1.98:1 | Fails | Lc -8.1 | Not readable |
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 900.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE5
oklch(88.6% 0.02 233.9)
-
Step 300
300
#ABC5D6
oklch(80.9% 0.037 236.6)
-
Step 400
400
#7EA7C1
oklch(70.8% 0.059 236.5)
-
Step 500
500
#5B91B2
oklch(63.2% 0.076 236.5)
-
Step 600
600
#407A9E
oklch(55.6% 0.083 238)
-
Step 700
700
#316787
oklch(49.1% 0.077 237.2)
-
Step 800
800
#2A546D
oklch(42.7% 0.063 236.9)
-
Step 900
900 (this color)
#234255
oklch(36.4% 0.049 237.2)
-
Step 950
950
#172934
oklch(27.1% 0.031 236.4)
#234255 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) | #394256 | 0.029 |
| Deuteranopia (no green cones) | #323C55 | 0.026 |
| Tritanopia (no blue cones) | #024748 | 0.040 |
| Achromatopsia (no color) | #3F3F3F | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234255
#234255
oklch(36.4% 0.049 237.2)
- #523723
#523723
oklch(36.3% 0.05 56.9)
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 #234255, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.015
- Dark Grey Blue #29465B ΔE 0.017
- Dark Blue Grey #1F3B4D ΔE 0.025
- Midnight Green #073B4C ΔE 0.038
- Onyx #343A40 ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.044
- Prussian Blue #1D3557 ΔE 0.045
- Dark Teal #014D4E ΔE 0.046
Use #234255 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.