#2D5170
Closest named color: Deep Sea Blue (#015482). oklch(42.2% 0.067 246.2), rgb(45, 81, 112).
Aa
White text reads best on this color (8.32:1).
About this color
#2D5170 is a dark, muted blue. In OKLCH its lightness is 42%, 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 0.036 away. White text reads best on it, at 8.32:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.52:1 |
| White text | 8.32:1 |
Values
| HEX | #2D5170 |
| RGB | rgb(45, 81, 112) |
| HSL | hsl(208, 43%, 31%) |
| OKLCH | oklch(42.2% 0.067 246.2) |
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 #2D5170 | 8.32:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #2D5170 | 2.52:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #2D5170 text on white | 8.32:1 | AAA | Lc 88.6 | Fine for body text |
| #2D5170 text on black | 2.52:1 | Fails | Lc -13.6 | 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
#ADC4D9
oklch(81% 0.039 245.9)
-
Step 400
400
#81A5C6
oklch(70.7% 0.063 246.5)
-
Step 500
500
#608EB7
oklch(63% 0.08 246.4)
-
Step 600
600
#4678A3
oklch(55.6% 0.086 246.1)
-
Step 700
700
#37658C
oklch(49.2% 0.081 246)
-
Step 800
800 (this color)
#2D5170
oklch(42.2% 0.067 246.2)
-
Step 900
900
#2A445C
oklch(37.7% 0.052 247.5)
-
Step 950
950
#192836
oklch(27% 0.033 247.4)
#2D5170 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) | #445271 | 0.029 |
| Deuteranopia (no green cones) | #3B4B6F | 0.023 |
| Tritanopia (no blue cones) | #00585C | 0.054 |
| Achromatopsia (no color) | #4E4E4E | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D5170
#2D5170
oklch(42.2% 0.067 246.2)
- #664623
#664623
oklch(42.2% 0.066 66.7)
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 #2D5170, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.036
- Light Navy #155084 ΔE 0.038
- YInMn Blue #415A77 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.045
- Dusk Blue #26538D ΔE 0.048
- Petrol #005F6A ΔE 0.052
- Deep Teal #00555A ΔE 0.053
Use #2D5170 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.