#155281
Closest named color: Deep Sea Blue (#015482). oklch(42.6% 0.098 246.8), rgb(21, 82, 129).
Aa
White text reads best on this color (8.21:1).
About this color
#155281 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.098 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.008 away. White text reads best on it, at 8.21:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.55:1 |
| White text | 8.21:1 |
Values
| HEX | #155281 |
| RGB | rgb(21, 82, 129) |
| HSL | hsl(206, 72%, 29%) |
| OKLCH | oklch(42.6% 0.098 246.8) |
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 #155281 | 8.21:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #155281 | 2.55:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #155281 text on white | 8.21:1 | AAA | Lc 88.0 | Fine for body text |
| #155281 text on black | 2.55:1 | Fails | Lc -14.1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCEE
oklch(88.6% 0.032 246.7)
-
Step 300
300
#A3C5E4
oklch(80.9% 0.057 246.1)
-
Step 400
400
#70A6D7
oklch(70.7% 0.092 246.9)
-
Step 500
500
#478FCC
oklch(63.1% 0.117 246.6)
-
Step 600
600
#2478B9
oklch(55.6% 0.128 246.7)
-
Step 700
700
#1565A0
oklch(49.2% 0.119 246.7)
-
Step 800
800 (this color)
#155281
oklch(42.6% 0.098 246.8)
-
Step 900
900
#1A4568
oklch(37.8% 0.076 246.4)
-
Step 950
950
#11283D
oklch(26.9% 0.049 248.1)
#155281 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) | #3C5483 | 0.038 |
| Deuteranopia (no green cones) | #2C4A80 | 0.027 |
| Tritanopia (no blue cones) | #005D63 | 0.070 |
| Achromatopsia (no color) | #4F4F4F | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155281
#155281
oklch(42.6% 0.098 246.8)
- #704200
#704200
oklch(42.4% 0.094 66.5)
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 #155281, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.008
- Light Navy #155084 ΔE 0.009
- Dusk Blue #26538D ΔE 0.025
- Light Navy Blue #2E5A88 ΔE 0.035
- Cobalt #1E488F ΔE 0.040
- Twilight Blue #0A437A ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.053
- YInMn Blue #415A77 ΔE 0.055
Use #155281 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.