#155691
Closest named color: Dusk Blue (#26538D). oklch(44.6% 0.115 250.7), rgb(21, 86, 145).
Aa
White text reads best on this color (7.57:1).
About this color
#155691 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.115 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.013 away. White text reads best on it, at 7.57:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.77:1 |
| White text | 7.57:1 |
Values
| HEX | #155691 |
| RGB | rgb(21, 86, 145) |
| HSL | hsl(209, 75%, 33%) |
| OKLCH | oklch(44.6% 0.115 250.7) |
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 #155691 | 7.57:1 | AAA | Lc -90.7 | Preferred for body text |
| Black text on #155691 | 2.77:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #155691 text on white | 7.57:1 | AAA | Lc 85.9 | Fine for body text |
| #155691 text on black | 2.77:1 | Fails | Lc -16.2 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C7DCF2
oklch(88.6% 0.038 249.5)
-
Step 300
300
#A1C4EB
oklch(80.8% 0.067 251.4)
-
Step 400
400
#6BA5E2
oklch(70.7% 0.109 250.7)
-
Step 500
500
#408DD9
oklch(63.1% 0.138 250.7)
-
Step 600
600
#1876C7
oklch(55.7% 0.15 250.6)
-
Step 700
700
#0562AC
oklch(49% 0.14 250.9)
-
Step 800
800 (this color)
#155691
oklch(44.6% 0.115 250.7)
-
Step 900
900
#15436F
oklch(37.6% 0.09 250.8)
-
Step 950
950
#0E2841
oklch(27.1% 0.057 249.9)
#155691 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) | #395A93 | 0.034 |
| Deuteranopia (no green cones) | #254F90 | 0.021 |
| Tritanopia (no blue cones) | #00646C | 0.084 |
| Achromatopsia (no color) | #545454 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155691
#155691
oklch(44.6% 0.115 250.7)
- #754900
#754900
oklch(44.5% 0.096 70.5)
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 #155691, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.013
- Light Navy #155084 ΔE 0.026
- Deep Sea Blue #015482 ΔE 0.027
- Light Navy Blue #2E5A88 ΔE 0.028
- Denim Blue #3B5B92 ΔE 0.038
- Cobalt #1E488F ΔE 0.039
- Peacock Blue #016795 ΔE 0.049
- Denim #3B638C ΔE 0.055
Use #155691 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.