#2D459D
Closest named color: Cobalt (#1E488F). oklch(42.5% 0.146 268.1), rgb(45, 69, 157).
Aa
White text reads best on this color (8.57:1).
About this color
#2D459D is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.146 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.029 away. White text reads best on it, at 8.57:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.44:1 |
| White text | 8.57:1 |
Values
| HEX | #2D459D |
| RGB | rgb(45, 69, 157) |
| HSL | hsl(227, 55%, 40%) |
| OKLCH | oklch(42.5% 0.146 268.1) |
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 #2D459D | 8.57:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #2D459D | 2.44:1 | Fails | Lc 14.9 | Not readable |
| #2D459D text on white | 8.57:1 | AAA | Lc 89.1 | Fine for body text |
| #2D459D text on black | 2.44:1 | Fails | Lc -13.2 | 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
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD9F9
oklch(88.6% 0.046 267.9)
-
Step 300
300
#A9BFF9
oklch(80.9% 0.086 268.4)
-
Step 400
400
#7C9CF6
oklch(70.7% 0.137 268)
-
Step 500
500
#5D80F2
oklch(63.1% 0.175 268.2)
-
Step 600
600
#4566E0
oklch(55.5% 0.189 268.2)
-
Step 700
700
#3754C3
oklch(49.1% 0.177 268.1)
-
Step 800
800 (this color)
#2D459D
oklch(42.5% 0.146 268.1)
-
Step 900
900
#283C7D
oklch(37.8% 0.113 267.8)
-
Step 950
950
#172349
oklch(26.8% 0.072 268.1)
#2D459D 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) | #0051A0 | 0.037 |
| Deuteranopia (no green cones) | #00479B | 0.029 |
| Tritanopia (no blue cones) | #005A6A | 0.117 |
| Achromatopsia (no color) | #4C4C4C | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D459D
#2D459D
oklch(42.5% 0.146 268.1)
- #624B00
#624B00
oklch(42.5% 0.087 88.4)
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 #2D459D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.029
- Blueberry #464196 ΔE 0.035
- Sapphire #2138AB ΔE 0.042
- Dark Slate Blue #483D8B ΔE 0.048
- Dusk Blue #26538D ΔE 0.049
- Light Navy #155084 ΔE 0.057
- Twilight Blue #0A437A ΔE 0.067
- Twilight #4E518B ΔE 0.067
Use #2D459D 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.