#234657
Closest named color: Charcoal (#264653). oklch(37.6% 0.05 231.2), rgb(35, 70, 87).
Aa
White text reads best on this color (10.07:1).
About this color
#234657 is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.050 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.007 away. White text reads best on it, at 10.07:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.08:1 |
| White text | 10.07:1 |
Values
| HEX | #234657 |
| RGB | rgb(35, 70, 87) |
| HSL | hsl(200, 43%, 24%) |
| OKLCH | oklch(37.6% 0.05 231.2) |
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 #234657 | 10.07:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #234657 | 2.08:1 | Fails | Lc 10.7 | Not readable |
| #234657 text on white | 10.07:1 | AAA | Lc 93.3 | Preferred for body text |
| #234657 text on black | 2.08:1 | Fails | Lc -9.2 | 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
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#A9C6D5
oklch(81% 0.038 230.3)
-
Step 400
400
#7AA8C0
oklch(70.7% 0.06 231.4)
-
Step 500
500
#5692B0
oklch(63.1% 0.077 231.5)
-
Step 600
600
#397C9B
oklch(55.6% 0.083 230.9)
-
Step 700
700
#2B6885
oklch(49% 0.078 232.1)
-
Step 800
800
#25556C
oklch(42.7% 0.064 231.8)
-
Step 900
900 (this color)
#234657
oklch(37.6% 0.05 231.2)
-
Step 950
950
#152933
oklch(26.9% 0.032 231.4)
#234657 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) | #3E4558 | 0.035 |
| Deuteranopia (no green cones) | #363F57 | 0.031 |
| Tritanopia (no blue cones) | #004B4C | 0.037 |
| Achromatopsia (no color) | #424242 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234657
#234657
oklch(37.6% 0.05 231.2)
- #573928
#573928
oklch(37.5% 0.051 50.2)
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 #234657, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.007
- Dark Grey Blue #29465B ΔE 0.010
- Dark Teal #014D4E ΔE 0.037
- Dark Blue Grey #1F3B4D ΔE 0.038
- Dark Slate Gray #2F4F4F ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.044
- Midnight Green #073B4C ΔE 0.048
- Onyx #343A40 ΔE 0.048
Use #234657 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.