#155388
Closest named color: Light Navy (#155084). oklch(43.3% 0.107 249.3), rgb(21, 83, 136).
Aa
White text reads best on this color (8.00:1).
About this color
#155388 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.107 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.010 away. White text reads best on it, at 8.00:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.62:1 |
| White text | 8.00:1 |
Values
| HEX | #155388 |
| RGB | rgb(21, 83, 136) |
| HSL | hsl(208, 73%, 31%) |
| OKLCH | oklch(43.3% 0.107 249.3) |
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 #155388 | 8.00:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #155388 | 2.62:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #155388 text on white | 8.00:1 | AAA | Lc 87.3 | Fine for body text |
| #155388 text on black | 2.62:1 | Fails | Lc -14.8 | 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
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCF0
oklch(88.6% 0.035 248.2)
-
Step 300
300
#A2C5E8
oklch(81% 0.062 248.6)
-
Step 400
400
#6EA5DC
oklch(70.6% 0.1 249.4)
-
Step 500
500
#458ED3
oklch(63.1% 0.127 249.4)
-
Step 600
600
#2077C0
oklch(55.7% 0.138 249.1)
-
Step 700
700
#1063A6
oklch(49% 0.13 249.5)
-
Step 800
800 (this color)
#155388
oklch(43.3% 0.107 249.3)
-
Step 900
900
#18446B
oklch(37.7% 0.082 248.7)
-
Step 950
950
#10283F
oklch(27% 0.053 249.5)
#155388 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) | #3A568A | 0.036 |
| Deuteranopia (no green cones) | #284C87 | 0.022 |
| Tritanopia (no blue cones) | #006067 | 0.078 |
| Achromatopsia (no color) | #505050 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155388
#155388
oklch(43.3% 0.107 249.3)
- #714500
#714500
oklch(43.2% 0.094 69)
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 #155388, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.010
- Deep Sea Blue #015482 ΔE 0.014
- Dusk Blue #26538D ΔE 0.015
- Light Navy Blue #2E5A88 ΔE 0.031
- Cobalt #1E488F ΔE 0.035
- Denim Blue #3B5B92 ΔE 0.046
- Twilight Blue #0A437A ΔE 0.052
- YInMn Blue #415A77 ΔE 0.057
Use #155388 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.