#102137
Closest named color: Dark (#1B2431). oklch(24.5% 0.048 255.5), rgb(16, 33, 55).
Aa
White text reads best on this color (16.21:1).
About this color
#102137 is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.048 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.024 away. White text reads best on it, at 16.21:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.29:1 |
| White text | 16.21:1 |
Values
| HEX | #102137 |
| RGB | rgb(16, 33, 55) |
| HSL | hsl(214, 55%, 14%) |
| OKLCH | oklch(24.5% 0.048 255.5) |
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 #102137 | 16.21:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #102137 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #102137 text on white | 16.21:1 | AAA | Lc 103.1 | Preferred for body text |
| #102137 text on black | 1.29:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDBEE
oklch(88.6% 0.031 254.3)
-
Step 300
300
#A9C3E6
oklch(81% 0.057 255.9)
-
Step 400
400
#7AA3D9
oklch(70.7% 0.091 255.6)
-
Step 500
500
#578BCF
oklch(63% 0.117 255.7)
-
Step 600
600
#3C74BC
oklch(55.6% 0.127 255.7)
-
Step 700
700
#2E61A2
oklch(49.1% 0.118 255.7)
-
Step 800
800
#275083
oklch(42.8% 0.097 255.1)
-
Step 900
900
#244269
oklch(37.6% 0.076 255.7)
-
Step 950
950 (this color)
#102137
oklch(24.5% 0.048 255.5)
#102137 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) | #182238 | 0.012 |
| Deuteranopia (no green cones) | #131F37 | 0.007 |
| Tritanopia (no blue cones) | #002629 | 0.040 |
| Achromatopsia (no color) | #202020 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102137
#102137
oklch(24.5% 0.048 255.5)
- #2E1D02
#2E1D02
oklch(24.7% 0.049 75.9)
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 #102137, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.024
- Oxford Blue #1B263B ΔE 0.025
- Rich Black #0D1B2A ΔE 0.031
- Jet #212529 ΔE 0.042
- Space Cadet #2B2D42 ΔE 0.063
- Navy Blue #001146 ΔE 0.065
- Gunmetal #293241 ΔE 0.072
- Marine #042E60 ΔE 0.080
Use #102137 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.