#102439
Closest named color: Oxford Blue (#1B263B). oklch(25.5% 0.048 251.2), rgb(16, 36, 57).
Aa
White text reads best on this color (15.74:1).
About this color
#102439 is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.048 and its hue 251°. 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 15.74:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.33:1 |
| White text | 15.74:1 |
Values
| HEX | #102439 |
| RGB | rgb(16, 36, 57) |
| HSL | hsl(211, 56%, 14%) |
| OKLCH | oklch(25.5% 0.048 251.2) |
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 #102439 | 15.74:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #102439 | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #102439 text on white | 15.74:1 | AAA | Lc 102.6 | Preferred for body text |
| #102439 text on black | 1.33:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CADBEE
oklch(88.5% 0.032 251.1)
-
Step 300
300
#A6C4E5
oklch(80.9% 0.057 251)
-
Step 400
400
#76A5D7
oklch(70.8% 0.089 250.7)
-
Step 500
500
#518DCD
oklch(63.1% 0.116 251.5)
-
Step 600
600
#3376BA
oklch(55.6% 0.126 251.4)
-
Step 700
700
#2563A0
oklch(49.1% 0.116 251.2)
-
Step 800
800
#205182
oklch(42.7% 0.097 251.2)
-
Step 900
900
#204368
oklch(37.6% 0.076 251.6)
-
Step 950
950 (this color)
#102439
oklch(25.5% 0.048 251.2)
#102439 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) | #1B253A | 0.016 |
| Deuteranopia (no green cones) | #162139 | 0.012 |
| Tritanopia (no blue cones) | #00292B | 0.040 |
| Achromatopsia (no color) | #232323 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102439
#102439
oklch(25.5% 0.048 251.2)
- #311E05
#311E05
oklch(25.4% 0.048 70.4)
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 #102439, 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 0.020
- Jet #212529 ΔE 0.039
- Rich Black #0D1B2A ΔE 0.039
- Space Cadet #2B2D42 ΔE 0.055
- Gunmetal #293241 ΔE 0.063
- Navy Blue #001146 ΔE 0.072
- Marine #042E60 ΔE 0.073
Use #102439 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.