#2D4C9E
Closest named color: Cobalt (#1E488F). oklch(44.1% 0.138 265.5), rgb(45, 76, 158).
Aa
White text reads best on this color (7.95:1).
About this color
#2D4C9E is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.138 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.031 away. White text reads best on it, at 7.95:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.63:1 |
| White text | 7.95:1 |
Values
| HEX | #2D4C9E |
| RGB | rgb(45, 76, 158) |
| HSL | hsl(224, 56%, 40%) |
| OKLCH | oklch(44.1% 0.138 265.5) |
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 #2D4C9E | 7.95:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #2D4C9E | 2.63:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #2D4C9E text on white | 7.95:1 | AAA | Lc 87.2 | Fine for body text |
| #2D4C9E text on black | 2.63:1 | Fails | Lc -14.9 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CBD9F8
oklch(88.5% 0.045 266.2)
-
Step 300
300
#A8C0F6
oklch(80.9% 0.081 266)
-
Step 400
400
#7A9EF1
oklch(70.8% 0.129 265.5)
-
Step 500
500
#5883EC
oklch(63.1% 0.165 265.2)
-
Step 600
600
#3F6ADB
oklch(55.7% 0.18 265.3)
-
Step 700
700
#3257BE
oklch(49.1% 0.168 265.6)
-
Step 800
800 (this color)
#2D4C9E
oklch(44.1% 0.138 265.5)
-
Step 900
900
#253D7A
oklch(37.6% 0.108 265.4)
-
Step 950
950
#162448
oklch(26.9% 0.07 265.9)
#2D4C9E 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) | #1956A1 | 0.028 |
| Deuteranopia (no green cones) | #004C9C | 0.028 |
| Tritanopia (no blue cones) | #005F6D | 0.111 |
| Achromatopsia (no color) | #515151 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4C9E
#2D4C9E
oklch(44.1% 0.138 265.5)
- #694E00
#694E00
oklch(44.1% 0.09 85.6)
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 #2D4C9E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.031
- Dusk Blue #26538D ΔE 0.037
- Blueberry #464196 ΔE 0.041
- Light Navy #155084 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.054
- Dark Slate Blue #483D8B ΔE 0.055
- Twilight #4E518B ΔE 0.056
- Sapphire #2138AB ΔE 0.057
Use #2D4C9E 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.