#28253F
Closest named color: Oxford Blue (#1B263B). oklch(28.1% 0.047 288.2), rgb(40, 37, 63).
Aa
White text reads best on this color (14.72:1).
About this color
#28253F is a dark, muted purple. In OKLCH its lightness is 28%, its chroma 0.047 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.023 away. White text reads best on it, at 14.72:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.42:1 |
| White text | 14.72:1 |
Values
| HEX | #28253F |
| RGB | rgb(40, 37, 63) |
| HSL | hsl(247, 26%, 20%) |
| OKLCH | oklch(28.1% 0.047 288.2) |
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 #28253F | 14.72:1 | AAA | Lc -104.4 | Preferred for body text |
| Black text on #28253F | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #28253F text on white | 14.72:1 | AAA | Lc 101.5 | Preferred for body text |
| #28253F text on black | 1.42:1 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E8F4
oklch(93.5% 0.016 289.9)
-
Step 200
200
#D8D6ED
oklch(88.5% 0.031 289.7)
-
Step 300
300
#BEBBE3
oklch(80.8% 0.056 288.5)
-
Step 400
400
#9E98D6
oklch(70.8% 0.09 288.3)
-
Step 500
500
#877DCA
oklch(63.1% 0.114 288.6)
-
Step 600
600
#7165B7
oklch(55.5% 0.125 288.4)
-
Step 700
700
#5F549E
oklch(49.2% 0.116 288.2)
-
Step 800
800
#4D4580
oklch(42.7% 0.096 287.9)
-
Step 900
900
#403A67
oklch(37.6% 0.076 288.3)
-
Step 950
950 (this color)
#28253F
oklch(28.1% 0.047 288.2)
#28253F 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) | #1D2940 | 0.021 |
| Deuteranopia (no green cones) | #1D273E | 0.019 |
| Tritanopia (no blue cones) | #222A2F | 0.040 |
| Achromatopsia (no color) | #282828 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28253F
#28253F
oklch(28.1% 0.047 288.2)
- #2B2B0C
#2B2B0C
oklch(28.1% 0.048 109.1)
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 #28253F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.023
- Space Cadet #2B2D42 ΔE 0.027
- Dark #1B2431 ΔE 0.036
- Gunmetal #293241 ΔE 0.043
- Jet #212529 ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.059
- Rich Black #0D1B2A ΔE 0.069
- Marine #042E60 ΔE 0.069
Use #28253F 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.