#155C85
Closest named color: Light Navy Blue (#2E5A88). oklch(45.3% 0.094 240), rgb(21, 92, 133).
Aa
White text reads best on this color (7.23:1).
About this color
#155C85 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.094 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.019 away. White text reads best on it, at 7.23:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.90:1 |
| White text | 7.23:1 |
Values
| HEX | #155C85 |
| RGB | rgb(21, 92, 133) |
| HSL | hsl(202, 73%, 30%) |
| OKLCH | oklch(45.3% 0.094 240) |
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 #155C85 | 7.23:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #155C85 | 2.90:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #155C85 text on white | 7.23:1 | AAA | Lc 84.8 | Fine for body text |
| #155C85 text on black | 2.90:1 | Fails | Lc -17.2 | 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
#E1ECF4
oklch(93.7% 0.016 239.1)
-
Step 200
200
#C8DCEC
oklch(88.4% 0.031 242)
-
Step 300
300
#A1C6E1
oklch(80.9% 0.055 240)
-
Step 400
400
#6CA8D2
oklch(70.7% 0.088 240.2)
-
Step 500
500
#3F92C6
oklch(63.2% 0.112 239.5)
-
Step 600
600
#117BB3
oklch(55.6% 0.122 239.9)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800 (this color)
#155C85
oklch(45.3% 0.094 240)
-
Step 900
900
#144664
oklch(37.7% 0.073 239.6)
-
Step 950
950
#0E293B
oklch(27% 0.047 240.8)
#155C85 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) | #495D87 | 0.049 |
| Deuteranopia (no green cones) | #395284 | 0.038 |
| Tritanopia (no blue cones) | #00666A | 0.063 |
| Achromatopsia (no color) | #575757 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155C85
#155C85
oklch(45.3% 0.094 240)
- #7C4815
#7C4815
oklch(45.4% 0.095 60.1)
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 #155C85, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.019
- Deep Sea Blue #015482 ΔE 0.027
- Dusk Blue #26538D ΔE 0.033
- Light Navy #155084 ΔE 0.037
- Peacock Blue #016795 ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.040
- Denim #3B638C ΔE 0.041
- YInMn Blue #415A77 ΔE 0.042
Use #155C85 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.