#155E83
Closest named color: Light Navy Blue (#2E5A88). oklch(45.7% 0.091 236.7), rgb(21, 94, 131).
Aa
White text reads best on this color (7.09:1).
About this color
#155E83 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.091 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.023 away. White text reads best on it, at 7.09:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.96:1 |
| White text | 7.09:1 |
Values
| HEX | #155E83 |
| RGB | rgb(21, 94, 131) |
| HSL | hsl(200, 72%, 30%) |
| OKLCH | oklch(45.7% 0.091 236.7) |
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 #155E83 | 7.09:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #155E83 | 2.96:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #155E83 text on white | 7.09:1 | AAA | Lc 84.2 | Fine for body text |
| #155E83 text on black | 2.96:1 | Fails | Lc -17.8 | Dividers and decoration only |
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
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C8DDEA
oklch(88.6% 0.029 234.9)
-
Step 300
300
#A1C7DF
oklch(81% 0.053 236)
-
Step 400
400
#6BA9CF
oklch(70.7% 0.085 236.6)
-
Step 500
500
#3E93C2
oklch(63.2% 0.108 236.3)
-
Step 600
600
#0D7CAF
oklch(55.6% 0.118 236.9)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800 (this color)
#155E83
oklch(45.7% 0.091 236.7)
-
Step 900
900
#134762
oklch(37.8% 0.07 236.1)
-
Step 950
950
#0E2A39
oklch(27.1% 0.044 235)
#155E83 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) | #4C5E85 | 0.052 |
| Deuteranopia (no green cones) | #3D5482 | 0.041 |
| Tritanopia (no blue cones) | #00686B | 0.058 |
| Achromatopsia (no color) | #585858 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155E83
#155E83
oklch(45.7% 0.091 236.7)
- #7D491E
#7D491E
oklch(45.9% 0.091 57)
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 #155E83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.023
- Deep Sea Blue #015482 ΔE 0.033
- Peacock Blue #016795 ΔE 0.035
- Denim #3B638C ΔE 0.039
- YInMn Blue #415A77 ΔE 0.040
- Dusk Blue #26538D ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.043
- Light Navy #155084 ΔE 0.044
Use #155E83 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.