#102D42
Closest named color: Oxford Blue (#1B263B). oklch(28.6% 0.052 243), rgb(16, 45, 66).
Aa
White text reads best on this color (14.22:1).
About this color
#102D42 is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.052 and its hue 243°. 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 14.22:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.47:1 |
| White text | 14.22:1 |
Values
| HEX | #102D42 |
| RGB | rgb(16, 45, 66) |
| HSL | hsl(205, 61%, 16%) |
| OKLCH | oklch(28.6% 0.052 243) |
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 #102D42 | 14.22:1 | AAA | Lc -103.8 | Preferred for body text |
| Black text on #102D42 | 1.47:1 | Fails | Lc 0.0 | Not readable |
| #102D42 text on white | 14.22:1 | AAA | Lc 100.8 | Preferred for body text |
| #102D42 text on black | 1.47:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C7DCEE
oklch(88.4% 0.034 244)
-
Step 300
300
#9FC6E6
oklch(80.9% 0.062 243.3)
-
Step 400
400
#67A8D9
oklch(70.7% 0.098 242.5)
-
Step 500
500
#3791CF
oklch(63.1% 0.126 242.8)
-
Step 600
600
#007ABB
oklch(55.7% 0.134 242.9)
-
Step 700
700
#00669E
oklch(49% 0.119 243.2)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900
#0F4569
oklch(37.6% 0.082 243.4)
-
Step 950
950 (this color)
#102D42
oklch(28.6% 0.052 243)
#102D42 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) | #242D43 | 0.025 |
| Deuteranopia (no green cones) | #1D2842 | 0.021 |
| Tritanopia (no blue cones) | #003234 | 0.038 |
| Achromatopsia (no color) | #2B2B2B | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102D42
#102D42
oklch(28.6% 0.052 243)
- #3C240C
#3C240C
oklch(28.6% 0.051 63)
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 #102D42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.025
- Space Cadet #2B2D42 ΔE 0.036
- Dark #1B2431 ΔE 0.038
- Gunmetal #293241 ΔE 0.039
- Midnight Green #073B4C ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.047
- Jet #212529 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.053
Use #102D42 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.