#2D458E
Closest named color: Cobalt (#1E488F). oklch(41.3% 0.124 267.1), rgb(45, 69, 142).
Aa
White text reads best on this color (8.92:1).
About this color
#2D458E is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.124 and its hue 267°. 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 8.92:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.35:1 |
| White text | 8.92:1 |
Values
| HEX | #2D458E |
| RGB | rgb(45, 69, 142) |
| HSL | hsl(225, 52%, 37%) |
| OKLCH | oklch(41.3% 0.124 267.1) |
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 #2D458E | 8.92:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #2D458E | 2.35:1 | Fails | Lc 13.8 | Not readable |
| #2D458E text on white | 8.92:1 | AAA | Lc 90.2 | Preferred for body text |
| #2D458E text on black | 2.35:1 | Fails | Lc -12.1 | 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
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ACC0F1
oklch(81% 0.073 267.4)
-
Step 400
400
#809EE9
oklch(70.7% 0.115 266.8)
-
Step 500
500
#6184E3
oklch(63.2% 0.148 266.9)
-
Step 600
600
#496BD1
oklch(55.6% 0.162 267.2)
-
Step 700
700
#3B59B5
oklch(49.2% 0.15 267.1)
-
Step 800
800 (this color)
#2D458E
oklch(41.3% 0.124 267.1)
-
Step 900
900
#2A3E75
oklch(37.8% 0.097 266.7)
-
Step 950
950
#192544
oklch(27.1% 0.06 266.5)
#2D458E 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) | #1B4E91 | 0.027 |
| Deuteranopia (no green cones) | #00458D | 0.031 |
| Tritanopia (no blue cones) | #005663 | 0.102 |
| Achromatopsia (no color) | #4A4A4A | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D458E
#2D458E
oklch(41.3% 0.124 267.1)
- #5F4700
#5F4700
oklch(41.2% 0.084 86.4)
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 #2D458E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.015
- Blueberry #464196 ΔE 0.038
- Dusk Blue #26538D ΔE 0.040
- Light Navy #155084 ΔE 0.041
- Dark Slate Blue #483D8B ΔE 0.041
- Twilight Blue #0A437A ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.055
- Sapphire #2138AB ΔE 0.060
Use #2D458E 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.