#102D4C
Closest named color: Oxford Blue (#1B263B). oklch(29.3% 0.067 252.4), rgb(16, 45, 76).
Aa
White text reads best on this color (13.98:1).
About this color
#102D4C is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.067 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.035 away. White text reads best on it, at 13.98:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.50:1 |
| White text | 13.98:1 |
Values
| HEX | #102D4C |
| RGB | rgb(16, 45, 76) |
| HSL | hsl(211, 65%, 18%) |
| OKLCH | oklch(29.3% 0.067 252.4) |
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 #102D4C | 13.98:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #102D4C | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #102D4C text on white | 13.98:1 | AAA | Lc 100.4 | Preferred for body text |
| #102D4C text on black | 1.50:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C5DCF6
oklch(88.6% 0.044 251.5)
-
Step 300
300
#9CC4F3
oklch(80.8% 0.079 252.8)
-
Step 400
400
#63A4ED
oklch(70.6% 0.127 252.5)
-
Step 500
500
#328BE7
oklch(63% 0.162 252.6)
-
Step 600
600
#0074D1
oklch(55.7% 0.167 252.1)
-
Step 700
700
#0061B1
oklch(49.1% 0.148 252.3)
-
Step 800
800
#004F93
oklch(42.7% 0.13 252.6)
-
Step 900
900
#0B4277
oklch(37.6% 0.105 252.5)
-
Step 950
950 (this color)
#102D4C
oklch(29.3% 0.067 252.4)
#102D4C 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) | #1F2F4D | 0.019 |
| Deuteranopia (no green cones) | #16294B | 0.013 |
| Tritanopia (no blue cones) | #003438 | 0.051 |
| Achromatopsia (no color) | #2C2C2C | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102D4C
#102D4C
oklch(29.3% 0.067 252.4)
- #3F2600
#3F2600
oklch(29.3% 0.063 72.1)
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 #102D4C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.035
- Marine #042E60 ΔE 0.036
- Space Cadet #2B2D42 ΔE 0.039
- Gunmetal #293241 ΔE 0.044
- Midnight Green #073B4C ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.052
- Dark #1B2431 ΔE 0.052
Use #102D4C 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.