#255990
Closest named color: Light Navy Blue (#2E5A88). oklch(45.7% 0.106 252.3), rgb(37, 89, 144).
Aa
White text reads best on this color (7.21:1).
About this color
#255990 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.106 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.016 away. White text reads best on it, at 7.21:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.91:1 |
| White text | 7.21:1 |
Values
| HEX | #255990 |
| RGB | rgb(37, 89, 144) |
| HSL | hsl(211, 59%, 35%) |
| OKLCH | oklch(45.7% 0.106 252.3) |
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 #255990 | 7.21:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #255990 | 2.91:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #255990 text on white | 7.21:1 | AAA | Lc 84.8 | Fine for body text |
| #255990 text on black | 2.91:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#C9DBF0
oklch(88.4% 0.035 252.3)
-
Step 300
300
#A4C4E8
oklch(80.9% 0.062 251.6)
-
Step 400
400
#73A4DD
oklch(70.7% 0.099 252.9)
-
Step 500
500
#4C8DD3
oklch(63.2% 0.125 251.9)
-
Step 600
600
#2C75C1
oklch(55.6% 0.138 252.5)
-
Step 700
700
#1E62A6
oklch(49.1% 0.128 252.2)
-
Step 800
800 (this color)
#255990
oklch(45.7% 0.106 252.3)
-
Step 900
900
#1D436C
oklch(37.7% 0.083 252.4)
-
Step 950
950
#12273F
oklch(26.9% 0.053 253.1)
#255990 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) | #405D92 | 0.031 |
| Deuteranopia (no green cones) | #30538F | 0.018 |
| Tritanopia (no blue cones) | #00666D | 0.081 |
| Achromatopsia (no color) | #575757 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255990
#255990
oklch(45.7% 0.106 252.3)
- #784D00
#784D00
oklch(45.8% 0.098 72.6)
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 #255990, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.016
- Dusk Blue #26538D ΔE 0.017
- Denim Blue #3B5B92 ΔE 0.023
- Deep Sea Blue #015482 ΔE 0.034
- Light Navy #155084 ΔE 0.035
- Peacock Blue #016795 ΔE 0.041
- Denim #3B638C ΔE 0.041
- Dusky Blue #475F94 ΔE 0.043
Use #255990 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.