#102A3F
Closest named color: Oxford Blue (#1B263B). oklch(27.6% 0.05 245.5), rgb(16, 42, 63).
Aa
White text reads best on this color (14.73:1).
About this color
#102A3F is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.050 and its hue 245°. 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 14.73:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.42:1 |
| White text | 14.73:1 |
Values
| HEX | #102A3F |
| RGB | rgb(16, 42, 63) |
| HSL | hsl(207, 59%, 15%) |
| OKLCH | oklch(27.6% 0.05 245.5) |
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 #102A3F | 14.73:1 | AAA | Lc -104.3 | Preferred for body text |
| Black text on #102A3F | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #102A3F text on white | 14.73:1 | AAA | Lc 101.4 | Preferred for body text |
| #102A3F text on black | 1.42:1 | 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
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEE
oklch(88.5% 0.033 245.3)
-
Step 300
300
#A1C5E5
oklch(80.8% 0.06 245.5)
-
Step 400
400
#6CA7D9
oklch(70.8% 0.096 245.3)
-
Step 500
500
#4190CE
oklch(63.2% 0.121 245.2)
-
Step 600
600
#1779BB
oklch(55.7% 0.132 245.1)
-
Step 700
700
#0465A2
oklch(49.1% 0.124 245.8)
-
Step 800
800
#0C5383
oklch(42.8% 0.102 245.3)
-
Step 900
900
#164569
oklch(37.8% 0.079 245.5)
-
Step 950
950 (this color)
#102A3F
oklch(27.6% 0.05 245.5)
#102A3F 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) | #212B40 | 0.023 |
| Deuteranopia (no green cones) | #1A263F | 0.017 |
| Tritanopia (no blue cones) | #002F31 | 0.038 |
| Achromatopsia (no color) | #282828 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102A3F
#102A3F
oklch(27.6% 0.05 245.5)
- #392209
#392209
oklch(27.6% 0.051 64.8)
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 #102A3F, 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 0.030
- Space Cadet #2B2D42 ΔE 0.041
- Jet #212529 ΔE 0.043
- Gunmetal #293241 ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.056
- Midnight Green #073B4C ΔE 0.057
- Marine #042E60 ΔE 0.059
Use #102A3F 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.