#274777
Closest named color: Twilight Blue (#0A437A). oklch(39.9% 0.09 258.3), rgb(39, 71, 119).
Aa
White text reads best on this color (9.31:1).
About this color
#274777 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.090 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.027 away. White text reads best on it, at 9.31:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.25:1 |
| White text | 9.31:1 |
Values
| HEX | #274777 |
| RGB | rgb(39, 71, 119) |
| HSL | hsl(216, 51%, 31%) |
| OKLCH | oklch(39.9% 0.09 258.3) |
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 #274777 | 9.31:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #274777 | 2.25:1 | Fails | Lc 12.7 | Not readable |
| #274777 text on white | 9.31:1 | AAA | Lc 91.3 | Preferred for body text |
| #274777 text on black | 2.25:1 | Fails | Lc -11.0 | 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 900.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADAF2
oklch(88.4% 0.037 258.4)
-
Step 300
300
#A6C2ED
oklch(80.8% 0.068 258.9)
-
Step 400
400
#76A2E4
oklch(70.7% 0.109 258.3)
-
Step 500
500
#5289DC
oklch(63.1% 0.139 258.4)
-
Step 600
600
#3671C9
oklch(55.5% 0.15 258.4)
-
Step 700
700
#285EAE
oklch(49% 0.14 258.4)
-
Step 800
800
#234E8D
oklch(42.8% 0.115 258.1)
-
Step 900
900 (this color)
#274777
oklch(39.9% 0.09 258.3)
-
Step 950
950
#142642
oklch(26.9% 0.058 258.9)
#274777 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) | #324B79 | 0.019 |
| Deuteranopia (no green cones) | #264376 | 0.012 |
| Tritanopia (no blue cones) | #005259 | 0.074 |
| Achromatopsia (no color) | #474747 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274777
#274777
oklch(39.9% 0.09 258.3)
- #5F4100
#5F4100
oklch(39.9% 0.083 79)
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 #274777, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.027
- Light Navy #155084 ΔE 0.032
- Cobalt #1E488F ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.041
- Dusk Blue #26538D ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.061
- Marine Blue #01386A ΔE 0.061
Use #274777 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.