#23253D
Closest named color: Oxford Blue (#1B263B). oklch(27.5% 0.044 279.4), rgb(35, 37, 61).
Aa
White text reads best on this color (14.96:1).
About this color
#23253D is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.044 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.014 away. White text reads best on it, at 14.96:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.40:1 |
| White text | 14.96:1 |
Values
| HEX | #23253D |
| RGB | rgb(35, 37, 61) |
| HSL | hsl(235, 27%, 19%) |
| OKLCH | oklch(27.5% 0.044 279.4) |
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 #23253D | 14.96:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #23253D | 1.40:1 | Fails | Lc 0.0 | Not readable |
| #23253D text on white | 14.96:1 | AAA | Lc 101.8 | Preferred for body text |
| #23253D text on black | 1.40:1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D5D8ED
oklch(88.6% 0.029 279.3)
-
Step 300
300
#B9BEE3
oklch(81% 0.052 279.1)
-
Step 400
400
#959BD5
oklch(70.6% 0.085 279.4)
-
Step 500
500
#7C82C9
oklch(63.1% 0.107 279.2)
-
Step 600
600
#666AB6
oklch(55.6% 0.117 279.6)
-
Step 700
700
#55589D
oklch(49.1% 0.109 279.7)
-
Step 800
800
#45487F
oklch(42.6% 0.09 279.5)
-
Step 900
900
#3A3D66
oklch(37.7% 0.07 279.3)
-
Step 950
950 (this color)
#23253D
oklch(27.5% 0.044 279.4)
#23253D 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) | #1D283E | 0.013 |
| Deuteranopia (no green cones) | #1C263C | 0.012 |
| Tritanopia (no blue cones) | #1C2A2E | 0.039 |
| Achromatopsia (no color) | #272727 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23253D
#23253D
oklch(27.5% 0.044 279.4)
- #2D280C
#2D280C
oklch(27.5% 0.044 99.3)
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 #23253D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.014
- Dark #1B2431 ΔE 0.027
- Space Cadet #2B2D42 ΔE 0.031
- Jet #212529 ΔE 0.039
- Gunmetal #293241 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.062
- Marine #042E60 ΔE 0.069
Use #23253D 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.