#27459B
Closest named color: Cobalt (#1E488F). oklch(42.1% 0.145 265.8), rgb(39, 69, 155).
Aa
White text reads best on this color (8.71:1).
About this color
#27459B is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.145 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.023 away. White text reads best on it, at 8.71:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.41:1 |
| White text | 8.71:1 |
Values
| HEX | #27459B |
| RGB | rgb(39, 69, 155) |
| HSL | hsl(224, 60%, 38%) |
| OKLCH | oklch(42.1% 0.145 265.8) |
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 #27459B | 8.71:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #27459B | 2.41:1 | Fails | Lc 14.6 | Not readable |
| #27459B text on white | 8.71:1 | AAA | Lc 89.4 | Fine for body text |
| #27459B text on black | 2.41:1 | Fails | Lc -12.8 | 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
#CAD9F9
oklch(88.4% 0.047 265.5)
-
Step 300
300
#A7C0F8
oklch(80.9% 0.084 265.9)
-
Step 400
400
#789DF5
oklch(70.6% 0.136 265.8)
-
Step 500
500
#5782F1
oklch(63.1% 0.173 265.7)
-
Step 600
600
#3E68E0
oklch(55.6% 0.189 265.9)
-
Step 700
700
#3156C2
oklch(49.1% 0.174 265.8)
-
Step 800
800 (this color)
#27459B
oklch(42.1% 0.145 265.8)
-
Step 900
900
#253D7D
oklch(37.8% 0.113 265.8)
-
Step 950
950
#162449
oklch(27% 0.071 266.2)
#27459B 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) | #00519E | 0.034 |
| Deuteranopia (no green cones) | #004699 | 0.024 |
| Tritanopia (no blue cones) | #005A69 | 0.115 |
| Achromatopsia (no color) | #4B4B4B | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #27459B
#27459B
oklch(42.1% 0.145 265.8)
- #624900
#624900
oklch(42.1% 0.086 86)
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 #27459B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.023
- Blueberry #464196 ΔE 0.041
- Sapphire #2138AB ΔE 0.042
- Dusk Blue #26538D ΔE 0.048
- Dark Slate Blue #483D8B ΔE 0.052
- Light Navy #155084 ΔE 0.053
- Twilight Blue #0A437A ΔE 0.061
- Deep Sea Blue #015482 ΔE 0.066
Use #27459B 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.