#2D488C
Closest named color: Cobalt (#1E488F). oklch(41.8% 0.118 265.4), rgb(45, 72, 140).
Aa
White text reads best on this color (8.68:1).
About this color
#2D488C is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.118 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.015 away. White text reads best on it, at 8.68:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.41:1 |
| White text | 8.68:1 |
Values
| HEX | #2D488C |
| RGB | rgb(45, 72, 140) |
| HSL | hsl(223, 51%, 36%) |
| OKLCH | oklch(41.8% 0.118 265.4) |
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 #2D488C | 8.68:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #2D488C | 2.41:1 | Fails | Lc 14.5 | Not readable |
| #2D488C text on white | 8.68:1 | AAA | Lc 89.5 | Fine for body text |
| #2D488C 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
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CDD9F3
oklch(88.4% 0.038 265.8)
-
Step 300
300
#ABC0EE
oklch(80.8% 0.069 265.7)
-
Step 400
400
#7F9FE6
oklch(70.7% 0.111 265.2)
-
Step 500
500
#6085DE
oklch(63% 0.141 265.5)
-
Step 600
600
#476DCC
oklch(55.6% 0.153 265.3)
-
Step 700
700
#395BB0
oklch(49.2% 0.141 265.2)
-
Step 800
800 (this color)
#2D488C
oklch(41.8% 0.118 265.4)
-
Step 900
900
#2A3F72
oklch(37.8% 0.091 265.4)
-
Step 950
950
#192543
oklch(27% 0.058 266.1)
#2D488C 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) | #25508F | 0.022 |
| Deuteranopia (no green cones) | #11478B | 0.024 |
| Tritanopia (no blue cones) | #005863 | 0.098 |
| Achromatopsia (no color) | #4B4B4B | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D488C
#2D488C
oklch(41.8% 0.118 265.4)
- #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 #2D488C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.015
- Dusk Blue #26538D ΔE 0.031
- Light Navy #155084 ΔE 0.033
- Blueberry #464196 ΔE 0.041
- Dark Slate Blue #483D8B ΔE 0.044
- Twilight Blue #0A437A ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.047
- Twilight #4E518B ΔE 0.054
Use #2D488C 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.