#182137
Closest named color: Dark (#1B2431). oklch(25.1% 0.044 266.4), rgb(24, 33, 55).
Aa
White text reads best on this color (16.01:1).
About this color
#182137 is a dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.044 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.018 away. White text reads best on it, at 16.01:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.31:1 |
| White text | 16.01:1 |
Values
| HEX | #182137 |
| RGB | rgb(24, 33, 55) |
| HSL | hsl(223, 39%, 15%) |
| OKLCH | oklch(25.1% 0.044 266.4) |
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 #182137 | 16.01:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #182137 | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #182137 text on white | 16.01:1 | AAA | Lc 102.9 | Preferred for body text |
| #182137 text on black | 1.31:1 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9ED
oklch(88.5% 0.029 266.4)
-
Step 300
300
#B1C0E3
oklch(80.8% 0.052 266.9)
-
Step 400
400
#89A0D5
oklch(70.8% 0.082 266.2)
-
Step 500
500
#6C87CA
oklch(63.1% 0.106 266.7)
-
Step 600
600
#5470B7
oklch(55.6% 0.115 266.4)
-
Step 700
700
#445D9E
oklch(49% 0.109 266.6)
-
Step 800
800
#384C80
oklch(42.6% 0.09 266.7)
-
Step 900
900
#304067
oklch(37.7% 0.07 266.2)
-
Step 950
950 (this color)
#182137
oklch(25.1% 0.044 266.4)
#182137 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) | #192338 | 0.007 |
| Deuteranopia (no green cones) | #152037 | 0.006 |
| Tritanopia (no blue cones) | #0B2629 | 0.040 |
| Achromatopsia (no color) | #212121 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #182137
#182137
oklch(25.1% 0.044 266.4)
- #2B2006
#2B2006
oklch(25.1% 0.043 85.8)
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 #182137, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.018
- Oxford Blue #1B263B ΔE 0.018
- Rich Black #0D1B2A ΔE 0.036
- Jet #212529 ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.055
- Gunmetal #293241 ΔE 0.066
- Navy Blue #001146 ΔE 0.071
- Marine #042E60 ΔE 0.080
Use #182137 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.