#155183
Closest named color: Light Navy (#155084). oklch(42.4% 0.102 248.6), rgb(21, 81, 131).
Aa
White text reads best on this color (8.27:1).
About this color
#155183 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.102 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.004 away. White text reads best on it, at 8.27:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.53:1 |
| White text | 8.27:1 |
Values
| HEX | #155183 |
| RGB | rgb(21, 81, 131) |
| HSL | hsl(207, 72%, 30%) |
| OKLCH | oklch(42.4% 0.102 248.6) |
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 #155183 | 8.27:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #155183 | 2.53:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #155183 text on white | 8.27:1 | AAA | Lc 88.2 | Fine for body text |
| #155183 text on black | 2.53:1 | Fails | Lc -14.0 | 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 800.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCEF
oklch(88.6% 0.033 248.2)
-
Step 300
300
#A3C5E6
oklch(81% 0.059 247.8)
-
Step 400
400
#70A6DA
oklch(70.8% 0.096 248.4)
-
Step 500
500
#478ED0
oklch(63% 0.123 248.9)
-
Step 600
600
#2477BD
oklch(55.6% 0.133 248.7)
-
Step 700
700
#1564A3
oklch(49.1% 0.124 248.5)
-
Step 800
800 (this color)
#155183
oklch(42.4% 0.102 248.6)
-
Step 900
900
#1A446A
oklch(37.7% 0.08 248.9)
-
Step 950
950
#11283E
oklch(27% 0.05 249.3)
#155183 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) | #395485 | 0.035 |
| Deuteranopia (no green cones) | #294A82 | 0.023 |
| Tritanopia (no blue cones) | #005D63 | 0.074 |
| Achromatopsia (no color) | #4E4E4E | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155183
#155183
oklch(42.4% 0.102 248.6)
- #6F4300
#6F4300
oklch(42.5% 0.093 68.3)
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 #155183, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.004
- Deep Sea Blue #015482 ΔE 0.011
- Dusk Blue #26538D ΔE 0.022
- Cobalt #1E488F ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.036
- Twilight Blue #0A437A ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.053
- YInMn Blue #415A77 ΔE 0.058
Use #155183 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.