#2A459D
Closest named color: Cobalt (#1E488F). oklch(42.4% 0.147 267), rgb(42, 69, 157).
Aa
White text reads best on this color (8.61:1).
About this color
#2A459D is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.147 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.027 away. White text reads best on it, at 8.61:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.43:1 |
| White text | 8.61:1 |
Values
| HEX | #2A459D |
| RGB | rgb(42, 69, 157) |
| HSL | hsl(226, 58%, 39%) |
| OKLCH | oklch(42.4% 0.147 267) |
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 #2A459D | 8.61:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #2A459D | 2.43:1 | Fails | Lc 14.8 | Not readable |
| #2A459D text on white | 8.61:1 | AAA | Lc 89.2 | Fine for body text |
| #2A459D text on black | 2.43:1 | Fails | Lc -13.1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CBD9FA
oklch(88.5% 0.048 267.2)
-
Step 300
300
#A8C0F9
oklch(81% 0.085 266.8)
-
Step 400
400
#7A9CF6
oklch(70.6% 0.138 267.2)
-
Step 500
500
#5A81F2
oklch(63.1% 0.175 267)
-
Step 600
600
#4167E1
oklch(55.6% 0.191 266.9)
-
Step 700
700
#3455C4
oklch(49.2% 0.178 267)
-
Step 800
800 (this color)
#2A459D
oklch(42.4% 0.147 267)
-
Step 900
900
#263C7E
oklch(37.7% 0.115 266.9)
-
Step 950
950
#16244A
oklch(27.1% 0.073 266.4)
#2A459D 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 | 0.036 |
| Deuteranopia (no green cones) | #00479B | 0.026 |
| Tritanopia (no blue cones) | #005A6A | 0.117 |
| Achromatopsia (no color) | #4C4C4C | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A459D
#2A459D
oklch(42.4% 0.147 267)
- #624A00
#624A00
oklch(42.3% 0.086 87.2)
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 #2A459D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.027
- Blueberry #464196 ΔE 0.038
- Sapphire #2138AB ΔE 0.041
- Dusk Blue #26538D ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.051
- Light Navy #155084 ΔE 0.056
- Twilight Blue #0A437A ΔE 0.065
- Blue Blue #2242C7 ΔE 0.068
Use #2A459D 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.