#27599E
Closest named color: Denim Blue (#3B5B92). oklch(46.7% 0.124 257.2), rgb(39, 89, 158).
Aa
White text reads best on this color (6.97:1).
About this color
#27599E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.124 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.029 away. White text reads best on it, at 6.97:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.00:1 |
| White text | 6.97:1 |
Values
| HEX | #27599E |
| RGB | rgb(39, 89, 158) |
| HSL | hsl(215, 60%, 39%) |
| OKLCH | oklch(46.7% 0.124 257.2) |
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 #27599E | 6.97:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #27599E | 3.00:1 | AA large text | Lc 20.2 | Dividers and decoration only |
| #27599E text on white | 6.97:1 | AA | Lc 83.8 | Fine for body text |
| #27599E text on black | 3.00:1 | AA large text | Lc -18.1 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF6
oklch(93.7% 0.017 256.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#A8C3E8
oklch(81% 0.06 256.3)
-
Step 400
400
#7AA2DC
oklch(70.6% 0.096 257.6)
-
Step 500
500
#578AD3
oklch(63% 0.124 257.4)
-
Step 600
600
#3C73C0
oklch(55.6% 0.134 257.2)
-
Step 700
700 (this color)
#27599E
oklch(46.7% 0.124 257.2)
-
Step 800
800
#274F86
oklch(42.8% 0.102 256.9)
-
Step 900
900
#24426B
oklch(37.7% 0.079 256.6)
-
Step 950
950
#16273F
oklch(27.1% 0.05 257.1)
#27599E 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) | #375FA1 | 0.025 |
| Deuteranopia (no green cones) | #21549D | 0.016 |
| Tritanopia (no blue cones) | #006974 | 0.095 |
| Achromatopsia (no color) | #595959 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #27599E
#27599E
oklch(46.7% 0.124 257.2)
- #785100
#785100
oklch(46.6% 0.098 76.8)
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 #27599E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.029
- Dusk Blue #26538D ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.037
- Dusky Blue #475F94 ΔE 0.044
- Peacock Blue #016795 ΔE 0.047
- Denim #3B638C ΔE 0.050
- Light Navy #155084 ΔE 0.051
- Twilight #4E518B ΔE 0.053
Use #27599E 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.