#25243A
Closest named color: Oxford Blue (#1B263B). oklch(27.2% 0.04 285.5), rgb(37, 36, 58).
Aa
White text reads best on this color (15.08:1).
About this color
#25243A is a dark, muted purple. In OKLCH its lightness is 27%, its chroma 0.040 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.017 away. White text reads best on it, at 15.08:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.39:1 |
| White text | 15.08:1 |
Values
| HEX | #25243A |
| RGB | rgb(37, 36, 58) |
| HSL | hsl(243, 23%, 18%) |
| OKLCH | oklch(27.2% 0.04 285.5) |
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 #25243A | 15.08:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #25243A | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #25243A text on white | 15.08:1 | AAA | Lc 102.0 | Preferred for body text |
| #25243A text on black | 1.39:1 | 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
#E9E9F3
oklch(93.7% 0.013 286.1)
-
Step 200
200
#D7D7EB
oklch(88.5% 0.027 285.8)
-
Step 300
300
#BDBDDF
oklch(80.9% 0.048 285.3)
-
Step 400
400
#9B9ACF
oklch(70.6% 0.077 285.1)
-
Step 500
500
#8481C2
oklch(63.2% 0.097 285.4)
-
Step 600
600
#6E69AF
oklch(55.6% 0.107 285.6)
-
Step 700
700
#5C5796
oklch(49% 0.099 285.7)
-
Step 800
800
#4B487A
oklch(42.8% 0.082 285.1)
-
Step 900
900
#3E3C62
oklch(37.6% 0.064 285.3)
-
Step 950
950 (this color)
#25243A
oklch(27.2% 0.04 285.5)
#25243A 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) | #1E273B | 0.014 |
| Deuteranopia (no green cones) | #1D2639 | 0.015 |
| Tritanopia (no blue cones) | #20282C | 0.035 |
| Achromatopsia (no color) | #262626 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25243A
#25243A
oklch(27.2% 0.04 285.5)
- #2A280F
#2A280F
oklch(27.2% 0.04 104.6)
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 #25243A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.017
- Dark #1B2431 ΔE 0.025
- Space Cadet #2B2D42 ΔE 0.033
- Jet #212529 ΔE 0.035
- Gunmetal #293241 ΔE 0.047
- Rich Black #0D1B2A ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.067
- Dark Blue Grey #1F3B4D ΔE 0.075
Use #25243A 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.