#255B7C
Closest named color: Light Navy Blue (#2E5A88). oklch(45.1% 0.078 238.8), rgb(37, 91, 124).
Aa
White text reads best on this color (7.32:1).
About this color
#255B7C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.078 and its hue 239°. 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 7.32:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.86:1 |
| White text | 7.32:1 |
Values
| HEX | #255B7C |
| RGB | rgb(37, 91, 124) |
| HSL | hsl(203, 54%, 32%) |
| OKLCH | oklch(45.1% 0.078 238.8) |
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 #255B7C | 7.32:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #255B7C | 2.86:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #255B7C text on white | 7.32:1 | AAA | Lc 85.2 | Fine for body text |
| #255B7C text on black | 2.86:1 | Fails | Lc -16.8 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CBDCE8
oklch(88.5% 0.025 238.4)
-
Step 300
300
#A6C5DB
oklch(80.8% 0.046 239.1)
-
Step 400
400
#75A7CA
oklch(70.6% 0.074 239.7)
-
Step 500
500
#4F91BC
oklch(63.1% 0.094 239.2)
-
Step 600
600
#2F7BA8
oklch(55.7% 0.101 238.6)
-
Step 700
700
#216790
oklch(49% 0.094 239.1)
-
Step 800
800 (this color)
#255B7C
oklch(45.1% 0.078 238.8)
-
Step 900
900
#1F465E
oklch(37.7% 0.06 238.3)
-
Step 950
950
#132937
oklch(27% 0.038 238.3)
#255B7C 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) | #4C5B7E | 0.044 |
| Deuteranopia (no green cones) | #40527B | 0.036 |
| Tritanopia (no blue cones) | #006366 | 0.054 |
| Achromatopsia (no color) | #565656 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255B7C
#255B7C
oklch(45.1% 0.078 238.8)
- #754A25
#754A25
oklch(45% 0.078 59.5)
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 #255B7C, 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
- YInMn Blue #415A77 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.033
- Petrol #005F6A ΔE 0.041
- Dusk Blue #26538D ΔE 0.041
- Denim #3B638C ΔE 0.041
- Light Navy #155084 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.044
Use #255B7C 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.