#234D93
Closest named color: Cobalt (#1E488F). oklch(43% 0.125 260), rgb(35, 77, 147).
Aa
White text reads best on this color (8.22:1).
About this color
#234D93 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.125 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.016 away. White text reads best on it, at 8.22:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.55:1 |
| White text | 8.22:1 |
Values
| HEX | #234D93 |
| RGB | rgb(35, 77, 147) |
| HSL | hsl(218, 62%, 36%) |
| OKLCH | oklch(43% 0.125 260) |
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 #234D93 | 8.22:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #234D93 | 2.55:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #234D93 text on white | 8.22:1 | AAA | Lc 88.1 | Fine for body text |
| #234D93 text on black | 2.55:1 | Fails | Lc -14.1 | 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
#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
#A5C2F0
oklch(80.9% 0.073 259.5)
-
Step 400
400
#75A1E9
oklch(70.7% 0.117 259.9)
-
Step 500
500
#5188E2
oklch(63.2% 0.148 259.8)
-
Step 600
600
#356FD0
oklch(55.5% 0.162 260.1)
-
Step 700
700
#285DB4
oklch(49.2% 0.149 259.9)
-
Step 800
800 (this color)
#234D93
oklch(43% 0.125 260)
-
Step 900
900
#214074
oklch(37.7% 0.097 260.1)
-
Step 950
950
#142644
oklch(27% 0.061 260.1)
#234D93 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) | #285496 | 0.021 |
| Deuteranopia (no green cones) | #0C4A92 | 0.019 |
| Tritanopia (no blue cones) | #005E69 | 0.098 |
| Achromatopsia (no color) | #4F4F4F | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234D93
#234D93
oklch(43% 0.125 260)
- #694900
#694900
oklch(43% 0.089 79.8)
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 #234D93, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.016
- Dusk Blue #26538D ΔE 0.022
- Light Navy #155084 ΔE 0.030
- Deep Sea Blue #015482 ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.048
- Blueberry #464196 ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.051
- Twilight Blue #0A437A ΔE 0.054
Use #234D93 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.