#232351
Closest named color: Oxford Blue (#1B263B). oklch(28.4% 0.082 279.8), rgb(35, 35, 81).
Aa
White text reads best on this color (14.67:1).
About this color
#232351 is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.082 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.046 away. White text reads best on it, at 14.67:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.43:1 |
| White text | 14.67:1 |
Values
| HEX | #232351 |
| RGB | rgb(35, 35, 81) |
| HSL | hsl(240, 40%, 23%) |
| OKLCH | oklch(28.4% 0.082 279.8) |
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 #232351 | 14.67:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #232351 | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #232351 text on white | 14.67:1 | AAA | Lc 101.3 | Preferred for body text |
| #232351 text on black | 1.43:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E6E8FD
oklch(93.6% 0.028 281.5)
-
Step 200
200
#D1D6FD
oklch(88.5% 0.054 279.5)
-
Step 300
300
#B4BAFF
oklch(80.9% 0.098 280.1)
-
Step 400
400
#8F93FF
oklch(70.7% 0.156 280)
-
Step 500
500
#7674FD
oklch(63.2% 0.198 279.7)
-
Step 600
600
#6257EC
oklch(55.6% 0.216 280)
-
Step 700
700
#5146CD
oklch(49.1% 0.2 279.7)
-
Step 800
800
#423BA6
oklch(42.7% 0.166 279.7)
-
Step 900
900
#373484
oklch(37.7% 0.13 279.8)
-
Step 950
950 (this color)
#232351
oklch(28.4% 0.082 279.8)
#232351 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) | #0B2A53 | 0.033 |
| Deuteranopia (no green cones) | #062750 | 0.035 |
| Tritanopia (no blue cones) | #102D36 | 0.070 |
| Achromatopsia (no color) | #282828 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #232351
#232351
oklch(28.4% 0.082 279.8)
- #312A00
#312A00
oklch(28.4% 0.059 99.5)
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 #232351, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.046
- Marine #042E60 ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.054
- Dark Indigo #1F0954 ΔE 0.061
- Dark #1B2431 ΔE 0.063
- Gunmetal #293241 ΔE 0.063
- Midnight Blue #191970 ΔE 0.063
Use #232351 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.