#28273A
Closest named color: Oxford Blue (#1B263B). oklch(28.3% 0.035 286.4), rgb(40, 39, 58).
Aa
White text reads best on this color (14.56:1).
About this color
#28273A is a dark, muted purple. In OKLCH its lightness is 28%, its chroma 0.035 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.022 away. White text reads best on it, at 14.56:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.44:1 |
| White text | 14.56:1 |
Values
| HEX | #28273A |
| RGB | rgb(40, 39, 58) |
| HSL | hsl(243, 20%, 19%) |
| OKLCH | oklch(28.3% 0.035 286.4) |
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 #28273A | 14.56:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #28273A | 1.44:1 | Fails | Lc 0.0 | Not readable |
| #28273A text on white | 14.56:1 | AAA | Lc 101.4 | Preferred for body text |
| #28273A text on black | 1.44:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F2
oklch(93.7% 0.012 286.2)
-
Step 200
200
#D7D7E8
oklch(88.4% 0.023 285.9)
-
Step 300
300
#BEBDDB
oklch(80.9% 0.042 286.9)
-
Step 400
400
#9D9BC8
oklch(70.7% 0.065 286.6)
-
Step 500
500
#8582BA
oklch(63.1% 0.084 286.2)
-
Step 600
600
#6F6BA6
oklch(55.6% 0.091 286.2)
-
Step 700
700
#5D598F
oklch(49.1% 0.085 286.2)
-
Step 800
800
#4C4974
oklch(42.8% 0.07 286.2)
-
Step 900
900
#3F3D5D
oklch(37.6% 0.054 286.3)
-
Step 950
950 (this color)
#28273A
oklch(28.3% 0.035 286.4)
#28273A 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) | #22293B | 0.011 |
| Deuteranopia (no green cones) | #22283A | 0.010 |
| Tritanopia (no blue cones) | #242A2E | 0.029 |
| Achromatopsia (no color) | #292929 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28273A
#28273A
oklch(28.3% 0.035 286.4)
- #2C2B16
#2C2B16
oklch(28.4% 0.035 106.1)
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 #28273A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.022
- Space Cadet #2B2D42 ΔE 0.023
- Dark #1B2431 ΔE 0.030
- Jet #212529 ΔE 0.035
- Gunmetal #293241 ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.066
- Onyx #343A40 ΔE 0.067
Use #28273A 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.