#102139
Closest named color: Oxford Blue (#1B263B). oklch(24.7% 0.051 257.2), rgb(16, 33, 57).
Aa
White text reads best on this color (16.17:1).
About this color
#102139 is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.051 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.025 away. White text reads best on it, at 16.17:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.29:1 |
| White text | 16.17:1 |
Values
| HEX | #102139 |
| RGB | rgb(16, 33, 57) |
| HSL | hsl(215, 56%, 14%) |
| OKLCH | oklch(24.7% 0.051 257.2) |
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 #102139 | 16.17:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #102139 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #102139 text on white | 16.17:1 | AAA | Lc 103.0 | Preferred for body text |
| #102139 text on black | 1.29:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF6
oklch(93.7% 0.017 256.3)
-
Step 200
200
#CBDAF0
oklch(88.4% 0.034 257.9)
-
Step 300
300
#A8C3E8
oklch(81% 0.06 256.3)
-
Step 400
400
#79A2DD
oklch(70.6% 0.098 257.5)
-
Step 500
500
#568AD4
oklch(63% 0.125 257.3)
-
Step 600
600
#3B73C1
oklch(55.6% 0.135 257.2)
-
Step 700
700
#2D60A6
oklch(49.1% 0.125 257)
-
Step 800
800
#264F87
oklch(42.8% 0.104 256.9)
-
Step 900
900
#24426C
oklch(37.8% 0.081 257.1)
-
Step 950
950 (this color)
#102139
oklch(24.7% 0.051 257.2)
#102139 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) | #17233A | 0.013 |
| Deuteranopia (no green cones) | #111F39 | 0.007 |
| Tritanopia (no blue cones) | #00262A | 0.042 |
| Achromatopsia (no color) | #212121 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102139
#102139
oklch(24.7% 0.051 257.2)
- #2E1D00
#2E1D00
oklch(24.6% 0.051 77.8)
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 #102139, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.025
- Dark #1B2431 ΔE 0.026
- Rich Black #0D1B2A ΔE 0.033
- Jet #212529 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.062
- Navy Blue #001146 ΔE 0.063
- Gunmetal #293241 ΔE 0.072
- Marine #042E60 ΔE 0.077
Use #102139 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.