#234451
Closest named color: Charcoal (#264653). oklch(36.7% 0.045 225.7), rgb(35, 68, 81).
Aa
White text reads best on this color (10.41:1).
About this color
#234451 is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.045 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.008 away. White text reads best on it, at 10.41:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.01:1 |
| White text | 10.41:1 |
Values
| HEX | #234451 |
| RGB | rgb(35, 68, 81) |
| HSL | hsl(197, 40%, 23%) |
| OKLCH | oklch(36.7% 0.045 225.7) |
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 #234451 | 10.41:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #234451 | 2.01:1 | Fails | Lc 9.9 | Not readable |
| #234451 text on white | 10.41:1 | AAA | Lc 94.1 | Preferred for body text |
| #234451 text on black | 2.01:1 | Fails | Lc -8.5 | 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
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CDDCE3
oklch(88.5% 0.019 227.3)
-
Step 300
300
#ABC6D1
oklch(81% 0.033 224.3)
-
Step 400
400
#7DA8BA
oklch(70.7% 0.053 225.6)
-
Step 500
500
#5A92A9
oklch(63% 0.068 226.2)
-
Step 600
600
#3E7C95
oklch(55.5% 0.075 226.8)
-
Step 700
700
#2F697F
oklch(49.2% 0.07 225.8)
-
Step 800
800
#285567
oklch(42.6% 0.058 226.7)
-
Step 900
900 (this color)
#234451
oklch(36.7% 0.045 225.7)
-
Step 950
950
#172931
oklch(26.9% 0.028 227.9)
#234451 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) | #3D4352 | 0.035 |
| Deuteranopia (no green cones) | #363E51 | 0.030 |
| Tritanopia (no blue cones) | #064848 | 0.031 |
| Achromatopsia (no color) | #404040 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234451
#234451
oklch(36.7% 0.045 225.7)
- #53382B
#53382B
oklch(36.8% 0.044 46.6)
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 #234451, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.008
- Dark Grey Blue #29465B ΔE 0.019
- Dark Blue Grey #1F3B4D ΔE 0.030
- Dark Teal #014D4E ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.038
- Onyx #343A40 ΔE 0.040
- Midnight Green #073B4C ΔE 0.041
- Dark Slate Gray #2F4F4F ΔE 0.042
Use #234451 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.