#182B37
Closest named color: Oxford Blue (#1B263B). oklch(27.9% 0.033 237.4), rgb(24, 43, 55).
Aa
White text reads best on this color (14.58:1).
About this color
#182B37 is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.033 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.021 away. White text reads best on it, at 14.58:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.43:1 |
| White text | 14.58:1 |
Values
| HEX | #182B37 |
| RGB | rgb(24, 43, 55) |
| HSL | hsl(203, 39%, 15%) |
| OKLCH | oklch(27.9% 0.033 237.4) |
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 #182B37 | 14.58:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #182B37 | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #182B37 text on white | 14.58:1 | AAA | Lc 101.3 | Preferred for body text |
| #182B37 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE6
oklch(88.5% 0.022 235)
-
Step 300
300
#AAC5D7
oklch(80.9% 0.039 237.2)
-
Step 400
400
#7BA7C4
oklch(70.7% 0.064 237.7)
-
Step 500
500
#5891B5
oklch(63.2% 0.081 237.7)
-
Step 600
600
#3B7BA0
oklch(55.7% 0.087 236.6)
-
Step 700
700
#2D6789
oklch(49.1% 0.081 237.4)
-
Step 800
800
#26546F
oklch(42.6% 0.067 237.1)
-
Step 900
900
#24465A
oklch(37.8% 0.052 236.3)
-
Step 950
950 (this color)
#182B37
oklch(27.9% 0.033 237.4)
#182B37 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) | #262B38 | 0.021 |
| Deuteranopia (no green cones) | #212737 | 0.018 |
| Tritanopia (no blue cones) | #092E2F | 0.026 |
| Achromatopsia (no color) | #292929 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #182B37
#182B37
oklch(27.9% 0.033 237.4)
- #352418
#352418
oklch(27.8% 0.033 56.1)
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 #182B37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.021
- Dark #1B2431 ΔE 0.024
- Jet #212529 ΔE 0.029
- Space Cadet #2B2D42 ΔE 0.037
- Gunmetal #293241 ΔE 0.039
- Midnight Green #073B4C ΔE 0.057
- Rich Black #0D1B2A ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.062
Use #182B37 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.