#234277
Closest named color: Twilight Blue (#0A437A). oklch(38.5% 0.098 260.4), rgb(35, 66, 119).
Aa
White text reads best on this color (9.91:1).
About this color
#234277 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.098 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.018 away. White text reads best on it, at 9.91:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.11:1 |
| White text | 9.91:1 |
Values
| HEX | #234277 |
| RGB | rgb(35, 66, 119) |
| HSL | hsl(218, 55%, 30%) |
| OKLCH | oklch(38.5% 0.098 260.4) |
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 #234277 | 9.91:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #234277 | 2.11:1 | Fails | Lc 11.2 | Not readable |
| #234277 text on white | 9.91:1 | AAA | Lc 92.8 | Preferred for body text |
| #234277 text on black | 2.11:1 | Fails | Lc -9.7 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CADAF5
oklch(88.5% 0.041 260.9)
-
Step 300
300
#A6C2F1
oklch(81% 0.073 260.7)
-
Step 400
400
#75A1EA
oklch(70.7% 0.118 260.2)
-
Step 500
500
#5287E3
oklch(63.1% 0.15 260.7)
-
Step 600
600
#366FD1
oklch(55.6% 0.163 260.5)
-
Step 700
700
#285CB5
oklch(49% 0.152 260.4)
-
Step 800
800
#234C92
oklch(42.7% 0.124 260.4)
-
Step 900
900 (this color)
#234277
oklch(38.5% 0.098 260.4)
-
Step 950
950
#142644
oklch(27% 0.061 260.1)
#234277 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) | #294779 | 0.017 |
| Deuteranopia (no green cones) | #1B3F76 | 0.013 |
| Tritanopia (no blue cones) | #004E56 | 0.079 |
| Achromatopsia (no color) | #434343 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234277
#234277
oklch(38.5% 0.098 260.4)
- #593E00
#593E00
oklch(38.4% 0.079 80.8)
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 #234277, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.018
- Cobalt #1E488F ΔE 0.041
- Light Navy #155084 ΔE 0.043
- Marine Blue #01386A ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.053
- Dusk Blue #26538D ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.063
Use #234277 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.