#155678
Closest named color: Deep Sea Blue (#015482). oklch(43.1% 0.084 237), rgb(21, 86, 120).
Aa
White text reads best on this color (7.97:1).
About this color
#155678 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.084 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.020 away. White text reads best on it, at 7.97:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.63:1 |
| White text | 7.97:1 |
Values
| HEX | #155678 |
| RGB | rgb(21, 86, 120) |
| HSL | hsl(201, 70%, 28%) |
| OKLCH | oklch(43.1% 0.084 237) |
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 #155678 | 7.97:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #155678 | 2.63:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #155678 text on white | 7.97:1 | AAA | Lc 87.3 | Fine for body text |
| #155678 text on black | 2.63:1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A3C6DD
oklch(80.9% 0.05 237)
-
Step 400
400
#70A8CC
oklch(70.6% 0.079 237.6)
-
Step 500
500
#4692BE
oklch(63% 0.1 236.8)
-
Step 600
600
#217CAB
oklch(55.7% 0.109 236.8)
-
Step 700
700
#116893
oklch(49.1% 0.102 237.3)
-
Step 800
800 (this color)
#155678
oklch(43.1% 0.084 237)
-
Step 900
900
#194660
oklch(37.6% 0.066 237.6)
-
Step 950
950
#102938
oklch(26.9% 0.042 237.4)
#155678 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) | #46567A | 0.049 |
| Deuteranopia (no green cones) | #384D77 | 0.038 |
| Tritanopia (no blue cones) | #005F62 | 0.054 |
| Achromatopsia (no color) | #515151 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155678
#155678
oklch(43.1% 0.084 237)
- #72431C
#72431C
oklch(43.1% 0.084 57.4)
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 #155678, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.020
- Light Navy #155084 ΔE 0.030
- Light Navy Blue #2E5A88 ΔE 0.036
- Dusk Blue #26538D ΔE 0.041
- Petrol #005F6A ΔE 0.042
- YInMn Blue #415A77 ΔE 0.044
- Deep Teal #00555A ΔE 0.053
- Denim Blue #3B5B92 ΔE 0.058
Use #155678 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.