#234C64
Closest named color: Dark Grey Blue (#29465B). oklch(39.8% 0.061 236.8), rgb(35, 76, 100).
Aa
White text reads best on this color (9.17:1).
About this color
#234C64 is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.061 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.021 away. White text reads best on it, at 9.17:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.28:1 |
| White text | 9.17:1 |
Values
| HEX | #234C64 |
| RGB | rgb(35, 76, 100) |
| HSL | hsl(202, 48%, 26%) |
| OKLCH | oklch(39.8% 0.061 236.8) |
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 #234C64 | 9.17:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #234C64 | 2.28:1 | Fails | Lc 13.0 | Not readable |
| #234C64 text on white | 9.17:1 | AAA | Lc 91.0 | Preferred for body text |
| #234C64 text on black | 2.28:1 | Fails | Lc -11.4 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A5C6DB
oklch(80.9% 0.046 236.1)
-
Step 400
400
#74A8C9
oklch(70.7% 0.073 237)
-
Step 500
500
#4C92BB
oklch(63.1% 0.094 236.6)
-
Step 600
600
#2B7BA7
oklch(55.5% 0.102 237.1)
-
Step 700
700
#1C688F
oklch(49.1% 0.094 236.4)
-
Step 800
800
#1B5574
oklch(42.7% 0.078 236.4)
-
Step 900
900 (this color)
#234C64
oklch(39.8% 0.061 236.8)
-
Step 950
950
#122937
oklch(26.9% 0.039 237.4)
#234C64 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) | #414C65 | 0.037 |
| Deuteranopia (no green cones) | #384564 | 0.031 |
| Tritanopia (no blue cones) | #005254 | 0.044 |
| Achromatopsia (no color) | #484848 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234C64
#234C64
oklch(39.8% 0.061 236.8)
- #603E25
#603E25
oklch(39.7% 0.061 56.2)
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 #234C64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.021
- Charcoal #264653 ΔE 0.030
- Dark Slate Gray #2F4F4F ΔE 0.041
- Deep Teal #00555A ΔE 0.042
- Dark Teal #014D4E ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.051
- Light Navy #155084 ΔE 0.053
- Twilight Blue #0A437A ΔE 0.055
Use #234C64 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.