#242539
Closest named color: Oxford Blue (#1B263B). oklch(27.3% 0.037 281.4), rgb(36, 37, 57).
Aa
White text reads best on this color (15.01:1).
About this color
#242539 is a dark, muted purple. In OKLCH its lightness is 27%, its chroma 0.037 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.015 away. White text reads best on it, at 15.01:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.39:1 |
| White text | 15.01:1 |
Values
| HEX | #242539 |
| RGB | rgb(36, 37, 57) |
| HSL | hsl(237, 23%, 18%) |
| OKLCH | oklch(27.3% 0.037 281.4) |
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 #242539 | 15.01:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #242539 | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #242539 text on white | 15.01:1 | AAA | Lc 101.9 | Preferred for body text |
| #242539 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D6D8E9
oklch(88.6% 0.023 280.6)
-
Step 300
300
#BBBEDD
oklch(80.9% 0.044 281)
-
Step 400
400
#999CCC
oklch(70.8% 0.07 281.7)
-
Step 500
500
#8083BF
oklch(63.1% 0.09 281.3)
-
Step 600
600
#6A6CAB
oklch(55.7% 0.097 281.4)
-
Step 700
700
#585A93
oklch(49.2% 0.091 281)
-
Step 800
800
#484977
oklch(42.6% 0.076 281.7)
-
Step 900
900
#3C3E60
oklch(37.8% 0.058 280.7)
-
Step 950
950 (this color)
#242539
oklch(27.3% 0.037 281.4)
#242539 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) | #1F273A | 0.010 |
| Deuteranopia (no green cones) | #1E2639 | 0.010 |
| Tritanopia (no blue cones) | #1F292C | 0.033 |
| Achromatopsia (no color) | #272727 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #242539
#242539
oklch(27.3% 0.037 281.4)
- #2B2811
#2B2811
oklch(27.4% 0.038 101.9)
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 #242539, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.015
- Dark #1B2431 ΔE 0.022
- Jet #212529 ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.032
- Gunmetal #293241 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.073
Use #242539 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.