#274484
Closest named color: Cobalt (#1E488F). oklch(40.1% 0.113 263.7), rgb(39, 68, 132).
Aa
White text reads best on this color (9.34:1).
About this color
#274484 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.113 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.021 away. White text reads best on it, at 9.34:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.24:1 |
| White text | 9.34:1 |
Values
| HEX | #274484 |
| RGB | rgb(39, 68, 132) |
| HSL | hsl(221, 54%, 34%) |
| OKLCH | oklch(40.1% 0.113 263.7) |
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 #274484 | 9.34:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #274484 | 2.24:1 | Fails | Lc 12.7 | Not readable |
| #274484 text on white | 9.34:1 | AAA | Lc 91.3 | Preferred for body text |
| #274484 text on black | 2.24:1 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A5C1F8
oklch(81% 0.084 263.6)
-
Step 400
400
#749EF5
oklch(70.6% 0.136 263.7)
-
Step 500
500
#5183F1
oklch(63% 0.174 263.8)
-
Step 600
600
#376AE0
oklch(55.7% 0.189 263.8)
-
Step 700
700
#2A57C2
oklch(49.1% 0.175 263.9)
-
Step 800
800
#23489D
oklch(42.7% 0.145 263.7)
-
Step 900
900 (this color)
#274484
oklch(40.1% 0.113 263.7)
-
Step 950
950
#142449
oklch(26.9% 0.072 264.5)
#274484 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) | #234B86 | 0.020 |
| Deuteranopia (no green cones) | #0F4383 | 0.020 |
| Tritanopia (no blue cones) | #00535D | 0.093 |
| Achromatopsia (no color) | #474747 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274484
#274484
oklch(40.1% 0.113 263.7)
- #5D4300
#5D4300
oklch(40.1% 0.082 83.4)
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 #274484, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.021
- Twilight Blue #0A437A ΔE 0.029
- Light Navy #155084 ΔE 0.035
- Dusk Blue #26538D ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.049
- Blueberry #464196 ΔE 0.052
- Marine Blue #01386A ΔE 0.066
Use #274484 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.