#274F9C
Closest named color: Dusk Blue (#26538D). oklch(44.3% 0.134 261.9), rgb(39, 79, 156).
Aa
White text reads best on this color (7.82:1).
About this color
#274F9C is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.134 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.029 away. White text reads best on it, at 7.82:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.68:1 |
| White text | 7.82:1 |
Values
| HEX | #274F9C |
| RGB | rgb(39, 79, 156) |
| HSL | hsl(219, 60%, 38%) |
| OKLCH | oklch(44.3% 0.134 261.9) |
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 #274F9C | 7.82:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #274F9C | 2.68:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #274F9C text on white | 7.82:1 | AAA | Lc 86.8 | Fine for body text |
| #274F9C text on black | 2.68:1 | Fails | Lc -15.3 | 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 800.
-
Step 50
50
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CADAF7
oklch(88.5% 0.044 262.4)
-
Step 300
300
#A5C1F4
oklch(80.8% 0.079 262.3)
-
Step 400
400
#75A0EE
oklch(70.7% 0.124 261.7)
-
Step 500
500
#5186E9
oklch(63.2% 0.16 261.7)
-
Step 600
600
#366DD7
oklch(55.6% 0.173 261.9)
-
Step 700
700
#295ABB
oklch(49.1% 0.162 262.1)
-
Step 800
800 (this color)
#274F9C
oklch(44.3% 0.134 261.9)
-
Step 900
900
#213F78
oklch(37.7% 0.104 261.8)
-
Step 950
950
#142546
oklch(26.9% 0.066 262.3)
#274F9C 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) | #24589F | 0.025 |
| Deuteranopia (no green cones) | #004D9A | 0.024 |
| Tritanopia (no blue cones) | #00616E | 0.105 |
| Achromatopsia (no color) | #525252 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274F9C
#274F9C
oklch(44.3% 0.134 261.9)
- #6C4D00
#6C4D00
oklch(44.2% 0.091 81.9)
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 #274F9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.029
- Cobalt #1E488F ΔE 0.030
- Light Navy #155084 ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.048
- Blueberry #464196 ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.053
- Twilight #4E518B ΔE 0.056
Use #274F9C 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.