#152138
Closest named color: Oxford Blue (#1B263B). oklch(24.9% 0.047 262.5), rgb(21, 33, 56).
Aa
White text reads best on this color (16.07:1).
About this color
#152138 is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.047 and its hue 263°. 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 16.07:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.07:1 |
Values
| HEX | #152138 |
| RGB | rgb(21, 33, 56) |
| HSL | hsl(219, 45%, 15%) |
| OKLCH | oklch(24.9% 0.047 262.5) |
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 #152138 | 16.07:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #152138 | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #152138 text on white | 16.07:1 | AAA | Lc 103.0 | Preferred for body text |
| #152138 text on black | 1.30:1 | 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
#F3F6FB
oklch(97.2% 0.007 260.7)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEE
oklch(88.5% 0.03 260.7)
-
Step 300
300
#AEC1E6
oklch(80.9% 0.056 263.7)
-
Step 400
400
#83A1D9
oklch(70.8% 0.089 262.5)
-
Step 500
500
#6488CE
oklch(63% 0.114 262.8)
-
Step 600
600
#4B71BB
oklch(55.6% 0.123 262.5)
-
Step 700
700
#3C5EA2
oklch(49.1% 0.116 262.8)
-
Step 800
800
#324D83
oklch(42.7% 0.096 262.9)
-
Step 900
900
#2C4169
oklch(37.8% 0.074 262.4)
-
Step 950
950 (this color)
#152138
oklch(24.9% 0.047 262.5)
#152138 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) | #182339 | 0.009 |
| Deuteranopia (no green cones) | #142038 | 0.004 |
| Tritanopia (no blue cones) | #042629 | 0.043 |
| Achromatopsia (no color) | #212121 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #152138
#152138
oklch(24.9% 0.047 262.5)
- #2C1F03
#2C1F03
oklch(24.9% 0.047 83.6)
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 #152138, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.020
- Dark #1B2431 ΔE 0.021
- Rich Black #0D1B2A ΔE 0.035
- Jet #212529 ΔE 0.040
- Space Cadet #2B2D42 ΔE 0.058
- Navy Blue #001146 ΔE 0.067
- Gunmetal #293241 ΔE 0.068
- Marine #042E60 ΔE 0.078
Use #152138 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.