#25293B
Closest named color: Oxford Blue (#1B263B). oklch(28.5% 0.034 274.4), rgb(37, 41, 59).
Aa
White text reads best on this color (14.39:1).
About this color
#25293B is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.034 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.020 away. White text reads best on it, at 14.39:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.45:1 |
| White text | 14.39:1 |
Values
| HEX | #25293B |
| RGB | rgb(37, 41, 59) |
| HSL | hsl(229, 23%, 19%) |
| OKLCH | oklch(28.5% 0.034 274.4) |
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 #25293B | 14.39:1 | AAA | Lc -104.1 | Preferred for body text |
| Black text on #25293B | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #25293B text on white | 14.39:1 | AAA | Lc 101.1 | Preferred for body text |
| #25293B text on black | 1.45:1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8E8
oklch(88.4% 0.022 274.7)
-
Step 300
300
#B8BFDB
oklch(80.8% 0.04 274.4)
-
Step 400
400
#949EC9
oklch(70.7% 0.064 274.5)
-
Step 500
500
#7A86BB
oklch(63.1% 0.081 274)
-
Step 600
600
#646FA7
oklch(55.6% 0.088 274.7)
-
Step 700
700
#535D8F
oklch(49.2% 0.081 274.4)
-
Step 800
800
#444C74
oklch(42.8% 0.067 274.6)
-
Step 900
900
#393F5E
oklch(37.6% 0.054 275.1)
-
Step 950
950 (this color)
#25293B
oklch(28.5% 0.034 274.4)
#25293B 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) | #232B3C | 0.007 |
| Deuteranopia (no green cones) | #22293B | 0.005 |
| Tritanopia (no blue cones) | #1F2C2F | 0.030 |
| Achromatopsia (no color) | #2A2A2A | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25293B
#25293B
oklch(28.5% 0.034 274.4)
- #2F2A16
#2F2A16
oklch(28.5% 0.034 95.8)
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 #25293B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.020
- Space Cadet #2B2D42 ΔE 0.020
- Dark #1B2431 ΔE 0.030
- Gunmetal #293241 ΔE 0.031
- Jet #212529 ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.056
- Dark Blue Grey #1F3B4D ΔE 0.060
- Midnight Green #073B4C ΔE 0.062
Use #25293B 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.