#23253F
Closest named color: Oxford Blue (#1B263B). oklch(27.6% 0.048 279.4), rgb(35, 37, 63).
Aa
White text reads best on this color (14.91:1).
About this color
#23253F is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.048 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.016 away. White text reads best on it, at 14.91:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.40:1 |
| White text | 14.91:1 |
Values
| HEX | #23253F |
| RGB | rgb(35, 37, 63) |
| HSL | hsl(236, 29%, 19%) |
| OKLCH | oklch(27.6% 0.048 279.4) |
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 #23253F | 14.91:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #23253F | 1.40:1 | Fails | Lc 0.0 | Not readable |
| #23253F text on white | 14.91:1 | AAA | Lc 101.7 | Preferred for body text |
| #23253F 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D4D7EE
oklch(88.4% 0.032 279.8)
-
Step 300
300
#B8BDE6
oklch(80.8% 0.058 279.6)
-
Step 400
400
#949BD9
oklch(70.7% 0.091 278.8)
-
Step 500
500
#7B81CE
oklch(63.1% 0.115 279.1)
-
Step 600
600
#6569BB
oklch(55.6% 0.126 279.4)
-
Step 700
700
#5457A1
oklch(49.1% 0.117 279.4)
-
Step 800
800
#454883
oklch(42.8% 0.097 279.3)
-
Step 900
900
#3A3C69
oklch(37.7% 0.076 280.1)
-
Step 950
950 (this color)
#23253F
oklch(27.6% 0.048 279.4)
#23253F 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) | #1C2840 | 0.014 |
| Deuteranopia (no green cones) | #1B263E | 0.013 |
| Tritanopia (no blue cones) | #1B2A2F | 0.041 |
| Achromatopsia (no color) | #272727 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23253F
#23253F
oklch(27.6% 0.048 279.4)
- #2E2808
#2E2808
oklch(27.6% 0.048 98.5)
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 #23253F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.016
- Dark #1B2431 ΔE 0.030
- Space Cadet #2B2D42 ΔE 0.031
- Jet #212529 ΔE 0.042
- Gunmetal #293241 ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.060
- Rich Black #0D1B2A ΔE 0.063
- Marine #042E60 ΔE 0.066
Use #23253F 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.