#25536B
Closest named color: Deep Teal (#00555A). oklch(42.1% 0.064 233.9), rgb(37, 83, 107).
Aa
White text reads best on this color (8.30:1).
About this color
#25536B is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.064 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.039 away. White text reads best on it, at 8.30:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.52:1 |
| White text | 8.30:1 |
Values
| HEX | #25536B |
| RGB | rgb(37, 83, 107) |
| HSL | hsl(201, 49%, 28%) |
| OKLCH | oklch(42.1% 0.064 233.9) |
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 #25536B | 8.30:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #25536B | 2.52:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #25536B text on white | 8.30:1 | AAA | Lc 88.5 | Fine for body text |
| #25536B text on black | 2.52:1 | Fails | Lc -13.7 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#AAC5D5
oklch(80.8% 0.037 233.9)
-
Step 400
400
#7CA7C1
oklch(70.7% 0.06 235.3)
-
Step 500
500
#5891B1
oklch(63% 0.077 234.4)
-
Step 600
600
#3C7B9D
oklch(55.6% 0.084 234.6)
-
Step 700
700
#2D6886
oklch(49.2% 0.078 233.6)
-
Step 800
800 (this color)
#25536B
oklch(42.1% 0.064 233.9)
-
Step 900
900
#254658
oklch(37.7% 0.05 234)
-
Step 950
950
#162934
oklch(27% 0.032 235.1)
#25536B 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) | #47526C | 0.040 |
| Deuteranopia (no green cones) | #3E4B6B | 0.035 |
| Tritanopia (no blue cones) | #00595B | 0.043 |
| Achromatopsia (no color) | #4E4E4E | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25536B
#25536B
oklch(42.1% 0.064 233.9)
- #69432A
#69432A
oklch(42.1% 0.065 53.4)
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 #25536B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.039
- Petrol #005F6A ΔE 0.041
- Deep Sea Blue #015482 ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.043
- YInMn Blue #415A77 ΔE 0.044
- Dark Slate Gray #2F4F4F ΔE 0.045
- Light Navy #155084 ΔE 0.046
- Charcoal #264653 ΔE 0.051
Use #25536B 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.