#274F91
Closest named color: Dusk Blue (#26538D). oklch(43.5% 0.118 259.9), rgb(39, 79, 145).
Aa
White text reads best on this color (8.03:1).
About this color
#274F91 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.118 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.014 away. White text reads best on it, at 8.03:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.61:1 |
| White text | 8.03:1 |
Values
| HEX | #274F91 |
| RGB | rgb(39, 79, 145) |
| HSL | hsl(217, 58%, 36%) |
| OKLCH | oklch(43.5% 0.118 259.9) |
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 #274F91 | 8.03:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #274F91 | 2.61:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #274F91 text on white | 8.03:1 | AAA | Lc 87.5 | Fine for body text |
| #274F91 text on black | 2.61:1 | Fails | Lc -14.6 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF3
oklch(88.5% 0.038 260.7)
-
Step 300
300
#A7C2EE
oklch(80.9% 0.069 260.1)
-
Step 400
400
#77A1E5
oklch(70.6% 0.11 259.7)
-
Step 500
500
#5488DE
oklch(63.1% 0.142 259.9)
-
Step 600
600
#3970CB
oklch(55.5% 0.153 259.9)
-
Step 700
700
#2B5DB0
oklch(49% 0.143 260)
-
Step 800
800 (this color)
#274F91
oklch(43.5% 0.118 259.9)
-
Step 900
900
#234072
oklch(37.6% 0.093 260.6)
-
Step 950
950
#152643
oklch(27% 0.059 260.5)
#274F91 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) | #2E5594 | 0.020 |
| Deuteranopia (no green cones) | #1A4C90 | 0.015 |
| Tritanopia (no blue cones) | #005E69 | 0.092 |
| Achromatopsia (no color) | #505050 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274F91
#274F91
oklch(43.5% 0.118 259.9)
- #6B4A00
#6B4A00
oklch(43.4% 0.09 79.3)
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 #274F91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.014
- Cobalt #1E488F ΔE 0.023
- Light Navy #155084 ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.044
- Twilight #4E518B ΔE 0.050
- Blueberry #464196 ΔE 0.051
Use #274F91 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.