#234E6B
Closest named color: Dark Grey Blue (#29465B). oklch(40.7% 0.068 240.8), rgb(35, 78, 107).
Aa
White text reads best on this color (8.84:1).
About this color
#234E6B is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.068 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.032 away. White text reads best on it, at 8.84:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.37:1 |
| White text | 8.84:1 |
Values
| HEX | #234E6B |
| RGB | rgb(35, 78, 107) |
| HSL | hsl(204, 51%, 28%) |
| OKLCH | oklch(40.7% 0.068 240.8) |
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 #234E6B | 8.84:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #234E6B | 2.37:1 | Fails | Lc 13.9 | Not readable |
| #234E6B text on white | 8.84:1 | AAA | Lc 90.1 | Preferred for body text |
| #234E6B text on black | 2.37:1 | Fails | Lc -12.2 | 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 800.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#AAC5D8
oklch(80.9% 0.04 238.7)
-
Step 400
400
#7DA6C5
oklch(70.7% 0.064 241.4)
-
Step 500
500
#5A90B6
oklch(63.1% 0.081 240.4)
-
Step 600
600
#3E7AA2
oklch(55.7% 0.088 240.1)
-
Step 700
700
#30668B
oklch(49% 0.083 241.2)
-
Step 800
800 (this color)
#234E6B
oklch(40.7% 0.068 240.8)
-
Step 900
900
#26455B
oklch(37.7% 0.053 241)
-
Step 950
950
#172935
oklch(27.1% 0.033 238.8)
#234E6B 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) | #414E6C | 0.036 |
| Deuteranopia (no green cones) | #37476A | 0.029 |
| Tritanopia (no blue cones) | #005558 | 0.049 |
| Achromatopsia (no color) | #4A4A4A | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234E6B
#234E6B
oklch(40.7% 0.068 240.8)
- #644020
#644020
oklch(40.6% 0.068 60.6)
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 #234E6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.032
- Deep Sea Blue #015482 ΔE 0.040
- Light Navy #155084 ΔE 0.042
- Charcoal #264653 ΔE 0.043
- Deep Teal #00555A ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.050
- Twilight Blue #0A437A ΔE 0.051
- Petrol #005F6A ΔE 0.055
Use #234E6B 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.