#27448D
Closest named color: Cobalt (#1E488F). oklch(40.7% 0.126 265), rgb(39, 68, 141).
Aa
White text reads best on this color (9.13:1).
About this color
#27448D is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.126 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.012 away. White text reads best on it, at 9.13:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.29:1 |
| White text | 9.13:1 |
Values
| HEX | #27448D |
| RGB | rgb(39, 68, 141) |
| HSL | hsl(223, 57%, 35%) |
| OKLCH | oklch(40.7% 0.126 265) |
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 #27448D | 9.13:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #27448D | 2.29:1 | Fails | Lc 13.3 | Not readable |
| #27448D text on white | 9.13:1 | AAA | Lc 90.7 | Preferred for body text |
| #27448D text on black | 2.29:1 | Fails | Lc -11.6 | 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
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CCD9F5
oklch(88.4% 0.041 265.7)
-
Step 300
300
#A9C0F1
oklch(80.8% 0.074 265.1)
-
Step 400
400
#7C9FEA
oklch(70.7% 0.117 264.5)
-
Step 500
500
#5C85E4
oklch(63.2% 0.15 264.9)
-
Step 600
600
#436CD2
oklch(55.6% 0.164 265)
-
Step 700
700
#355AB6
oklch(49.2% 0.152 264.9)
-
Step 800
800 (this color)
#27448D
oklch(40.7% 0.126 265)
-
Step 900
900
#273E75
oklch(37.6% 0.098 265)
-
Step 950
950
#172545
oklch(27% 0.063 264.7)
#27448D 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) | #184D90 | 0.026 |
| Deuteranopia (no green cones) | #00448C | 0.025 |
| Tritanopia (no blue cones) | #005562 | 0.100 |
| Achromatopsia (no color) | #484848 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #27448D
#27448D
oklch(40.7% 0.126 265)
- #5E4500
#5E4500
oklch(40.7% 0.083 84.9)
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 #27448D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.012
- Light Navy #155084 ΔE 0.040
- Twilight Blue #0A437A ΔE 0.040
- Dusk Blue #26538D ΔE 0.043
- Blueberry #464196 ΔE 0.044
- Dark Slate Blue #483D8B ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.054
- Sapphire #2138AB ΔE 0.059
Use #27448D 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.