#2D5271
Closest named color: Deep Sea Blue (#015482). oklch(42.5% 0.067 245.6), rgb(45, 82, 113).
Aa
White text reads best on this color (8.21:1).
About this color
#2D5271 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.067 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.035 away. White text reads best on it, at 8.21:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.55:1 |
| White text | 8.21:1 |
Values
| HEX | #2D5271 |
| RGB | rgb(45, 82, 113) |
| HSL | hsl(207, 43%, 31%) |
| OKLCH | oklch(42.5% 0.067 245.6) |
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 #2D5271 | 8.21:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #2D5271 | 2.55:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #2D5271 text on white | 8.21:1 | AAA | Lc 88.3 | Fine for body text |
| #2D5271 text on black | 2.55:1 | Fails | Lc -13.9 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE7
oklch(88.5% 0.022 245.9)
-
Step 300
300
#ACC4D9
oklch(80.9% 0.04 244.7)
-
Step 400
400
#80A5C6
oklch(70.7% 0.063 245.8)
-
Step 500
500
#5F8FB7
oklch(63.2% 0.08 244.7)
-
Step 600
600
#4578A3
oklch(55.6% 0.087 245.7)
-
Step 700
700
#36658C
oklch(49.1% 0.081 245.5)
-
Step 800
800 (this color)
#2D5271
oklch(42.5% 0.067 245.6)
-
Step 900
900
#29445C
oklch(37.6% 0.053 246.6)
-
Step 950
950
#182836
oklch(27% 0.034 245.9)
#2D5271 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) | #455372 | 0.030 |
| Deuteranopia (no green cones) | #3C4C70 | 0.024 |
| Tritanopia (no blue cones) | #00595D | 0.054 |
| Achromatopsia (no color) | #4F4F4F | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D5271
#2D5271
oklch(42.5% 0.067 245.6)
- #684724
#684724
oklch(42.7% 0.067 65.9)
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 #2D5271, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.035
- YInMn Blue #415A77 ΔE 0.037
- Light Navy #155084 ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.041
- Dusk Blue #26538D ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.048
- Petrol #005F6A ΔE 0.050
- Dusk #4E5481 ΔE 0.053
Use #2D5271 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.