#102A42
Closest named color: Oxford Blue (#1B263B). oklch(27.8% 0.055 248.8), rgb(16, 42, 66).
Aa
White text reads best on this color (14.66:1).
About this color
#102A42 is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.055 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.019 away. White text reads best on it, at 14.66:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.43:1 |
| White text | 14.66:1 |
Values
| HEX | #102A42 |
| RGB | rgb(16, 42, 66) |
| HSL | hsl(209, 61%, 16%) |
| OKLCH | oklch(27.8% 0.055 248.8) |
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 #102A42 | 14.66:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #102A42 | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #102A42 text on white | 14.66:1 | AAA | Lc 101.3 | Preferred for body text |
| #102A42 text on black | 1.43:1 | 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
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C7DCF1
oklch(88.5% 0.037 248.2)
-
Step 300
300
#A0C5E9
oklch(80.9% 0.065 247.9)
-
Step 400
400
#6BA6DF
oklch(70.8% 0.104 248.7)
-
Step 500
500
#3F8ED6
oklch(63.1% 0.133 249)
-
Step 600
600
#1577C3
oklch(55.6% 0.144 248.7)
-
Step 700
700
#0163A8
oklch(49% 0.134 248.9)
-
Step 800
800
#0B5188
oklch(42.6% 0.111 249)
-
Step 900
900
#15446D
oklch(37.7% 0.086 248.8)
-
Step 950
950 (this color)
#102A42
oklch(27.8% 0.055 248.8)
#102A42 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) | #1F2B43 | 0.020 |
| Deuteranopia (no green cones) | #182642 | 0.015 |
| Tritanopia (no blue cones) | #003033 | 0.042 |
| Achromatopsia (no color) | #282828 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102A42
#102A42
oklch(27.8% 0.055 248.8)
- #3A2305
#3A2305
oklch(27.9% 0.055 69)
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 #102A42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.019
- Dark #1B2431 ΔE 0.034
- Space Cadet #2B2D42 ΔE 0.040
- Gunmetal #293241 ΔE 0.046
- Jet #212529 ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.052
- Marine #042E60 ΔE 0.054
- Midnight Green #073B4C ΔE 0.056
Use #102A42 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.