#102B5A
Closest named color: Marine (#042E60). oklch(29.8% 0.091 260.6), rgb(16, 43, 90).
Aa
White text reads best on this color (13.85:1).
About this color
#102B5A is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.091 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.014 away. White text reads best on it, at 13.85:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.51:1 |
| White text | 13.85:1 |
Values
| HEX | #102B5A |
| RGB | rgb(16, 43, 90) |
| HSL | hsl(218, 70%, 21%) |
| OKLCH | oklch(29.8% 0.091 260.6) |
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 #102B5A | 13.85:1 | AAA | Lc -103.3 | Preferred for body text |
| Black text on #102B5A | 1.51:1 | Fails | Lc 0.0 | Not readable |
| #102B5A text on white | 13.85:1 | AAA | Lc 100.2 | Preferred for body text |
| #102B5A text on black | 1.51:1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFF
oklch(93.6% 0.031 258.9)
-
Step 200
200
#C4DAFF
oklch(88.4% 0.057 260.8)
-
Step 300
300
#9DC2FF
oklch(81% 0.096 260.2)
-
Step 400
400
#679FFF
oklch(70.7% 0.153 260.6)
-
Step 500
500
#3B83FF
oklch(63.1% 0.198 260.5)
-
Step 600
600
#0065F9
oklch(55.6% 0.235 260.6)
-
Step 700
700
#0054D3
oklch(49% 0.208 260.7)
-
Step 800
800
#0045AF
oklch(42.8% 0.18 260.5)
-
Step 900
900
#0B3B8C
oklch(37.7% 0.144 260.7)
-
Step 950
950 (this color)
#102B5A
oklch(29.8% 0.091 260.6)
#102B5A 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) | #10305C | 0.015 |
| Deuteranopia (no green cones) | #002959 | 0.015 |
| Tritanopia (no blue cones) | #00363E | 0.070 |
| Achromatopsia (no color) | #2D2D2D | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102B5A
#102B5A
oklch(29.8% 0.091 260.6)
- #3D2900
#3D2900
oklch(29.7% 0.062 80.2)
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 #102B5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.014
- Prussian Blue #1D3557 ΔE 0.038
- Marine Blue #01386A ΔE 0.045
- Oxford Blue #1B263B ΔE 0.057
- Space Cadet #2B2D42 ΔE 0.057
- Midnight Blue #191970 ΔE 0.059
- Midnight Green #073B4C ΔE 0.062
- Gunmetal #293241 ΔE 0.064
Use #102B5A 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.