#2D488B
Closest named color: Cobalt (#1E488F). oklch(41.8% 0.116 265.2), rgb(45, 72, 139).
Aa
White text reads best on this color (8.70:1).
About this color
#2D488B is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.116 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.016 away. White text reads best on it, at 8.70:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.41:1 |
| White text | 8.70:1 |
Values
| HEX | #2D488B |
| RGB | rgb(45, 72, 139) |
| HSL | hsl(223, 51%, 36%) |
| OKLCH | oklch(41.8% 0.116 265.2) |
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 #2D488B | 8.70:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #2D488B | 2.41:1 | Fails | Lc 14.4 | Not readable |
| #2D488B text on white | 8.70:1 | AAA | Lc 89.6 | Fine for body text |
| #2D488B text on black | 2.41:1 | Fails | Lc -12.7 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDD9F3
oklch(88.4% 0.038 265.8)
-
Step 300
300
#ABC1ED
oklch(80.9% 0.067 264.1)
-
Step 400
400
#809FE5
oklch(70.7% 0.109 265.5)
-
Step 500
500
#6085DD
oklch(63% 0.139 265.4)
-
Step 600
600
#476DCB
oklch(55.5% 0.152 265.2)
-
Step 700
700
#395BAF
oklch(49.1% 0.14 265.1)
-
Step 800
800 (this color)
#2D488B
oklch(41.8% 0.116 265.2)
-
Step 900
900
#2A3F71
oklch(37.7% 0.09 265.2)
-
Step 950
950
#192542
oklch(27% 0.057 265.8)
#2D488B 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) | #26508D | 0.022 |
| Deuteranopia (no green cones) | #13478A | 0.023 |
| Tritanopia (no blue cones) | #005762 | 0.096 |
| Achromatopsia (no color) | #4B4B4B | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D488B
#2D488B
oklch(41.8% 0.116 265.2)
- #624800
#624800
oklch(41.8% 0.086 84.9)
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 #2D488B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.016
- Dusk Blue #26538D ΔE 0.031
- Light Navy #155084 ΔE 0.032
- Blueberry #464196 ΔE 0.042
- Dark Slate Blue #483D8B ΔE 0.044
- Twilight Blue #0A437A ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.046
- Light Navy Blue #2E5A88 ΔE 0.054
Use #2D488B 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.