#2D458B
Closest named color: Cobalt (#1E488F). oklch(41.1% 0.12 266.8), rgb(45, 69, 139).
Aa
White text reads best on this color (8.99:1).
About this color
#2D458B is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.120 and its hue 267°. 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 8.99:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.33:1 |
| White text | 8.99:1 |
Values
| HEX | #2D458B |
| RGB | rgb(45, 69, 139) |
| HSL | hsl(225, 51%, 36%) |
| OKLCH | oklch(41.1% 0.12 266.8) |
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 #2D458B | 8.99:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #2D458B | 2.33:1 | Fails | Lc 13.6 | Not readable |
| #2D458B text on white | 8.99:1 | AAA | Lc 90.4 | Preferred for body text |
| #2D458B text on black | 2.33:1 | Fails | Lc -11.9 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CDD9F4
oklch(88.5% 0.039 266.5)
-
Step 300
300
#ACC0EF
oklch(80.9% 0.07 266.8)
-
Step 400
400
#819EE7
oklch(70.7% 0.112 267)
-
Step 500
500
#6284E0
oklch(63.1% 0.144 267)
-
Step 600
600
#4A6CCE
oklch(55.7% 0.156 266.9)
-
Step 700
700
#3B59B2
oklch(49% 0.146 266.9)
-
Step 800
800 (this color)
#2D458B
oklch(41.1% 0.12 266.8)
-
Step 900
900
#2B3E73
oklch(37.7% 0.094 267)
-
Step 950
950
#192543
oklch(27% 0.058 266.1)
#2D458B 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) | #1F4E8E | 0.026 |
| Deuteranopia (no green cones) | #07458A | 0.029 |
| Tritanopia (no blue cones) | #005561 | 0.099 |
| Achromatopsia (no color) | #494949 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D458B
#2D458B
oklch(41.1% 0.12 266.8)
- #5E4700
#5E4700
oklch(41.1% 0.084 87.4)
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 #2D458B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.016
- Light Navy #155084 ΔE 0.038
- Dusk Blue #26538D ΔE 0.039
- Blueberry #464196 ΔE 0.040
- Dark Slate Blue #483D8B ΔE 0.041
- Twilight Blue #0A437A ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.053
- Twilight #4E518B ΔE 0.060
Use #2D458B 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.