#234151
Closest named color: Charcoal (#264653). oklch(35.9% 0.045 233.3), rgb(35, 65, 81).
Aa
White text reads best on this color (10.78:1).
About this color
#234151 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.045 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.017 away. White text reads best on it, at 10.78:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.94:1 |
| White text | 10.78:1 |
Values
| HEX | #234151 |
| RGB | rgb(35, 65, 81) |
| HSL | hsl(201, 40%, 23%) |
| OKLCH | oklch(35.9% 0.045 233.3) |
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 #234151 | 10.78:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #234151 | 1.94:1 | Fails | Lc 9.0 | Not readable |
| #234151 text on white | 10.78:1 | AAA | Lc 94.9 | Preferred for body text |
| #234151 text on black | 1.94:1 | Fails | Lc -7.7 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE4
oklch(88.6% 0.019 232.5)
-
Step 300
300
#ACC5D3
oklch(80.9% 0.034 232.3)
-
Step 400
400
#7FA7BD
oklch(70.7% 0.054 232.6)
-
Step 500
500
#5D91AD
oklch(63.1% 0.07 233)
-
Step 600
600
#427B99
oklch(55.7% 0.076 233.4)
-
Step 700
700
#336782
oklch(49% 0.07 233.4)
-
Step 800
800
#2B546A
oklch(42.6% 0.059 233.9)
-
Step 900
900 (this color)
#234151
oklch(35.9% 0.045 233.3)
-
Step 950
950
#182932
oklch(27% 0.028 232.3)
#234151 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) | #394052 | 0.030 |
| Deuteranopia (no green cones) | #333B51 | 0.027 |
| Tritanopia (no blue cones) | #084546 | 0.034 |
| Achromatopsia (no color) | #3D3D3D | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234151
#234151
oklch(35.9% 0.045 233.3)
- #503626
#503626
oklch(35.9% 0.046 52.4)
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 #234151, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.017
- Dark Blue Grey #1F3B4D ΔE 0.021
- Dark Grey Blue #29465B ΔE 0.023
- Midnight Green #073B4C ΔE 0.034
- Onyx #343A40 ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.041
- Dark Teal #014D4E ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.045
Use #234151 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.