#274CA1
Closest named color: Cobalt (#1E488F). oklch(44% 0.145 263.8), rgb(39, 76, 161).
Aa
White text reads best on this color (7.97:1).
About this color
#274CA1 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.145 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.033 away. White text reads best on it, at 7.97:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.63:1 |
| White text | 7.97:1 |
Values
| HEX | #274CA1 |
| RGB | rgb(39, 76, 161) |
| HSL | hsl(222, 61%, 39%) |
| OKLCH | oklch(44% 0.145 263.8) |
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 #274CA1 | 7.97:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #274CA1 | 2.63:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #274CA1 text on white | 7.97:1 | AAA | Lc 87.2 | Fine for body text |
| #274CA1 text on black | 2.63:1 | Fails | Lc -14.9 | 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
#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
#759EF5
oklch(70.7% 0.136 264.1)
-
Step 500
500
#5283F1
oklch(63.1% 0.173 264)
-
Step 600
600
#376ADF
oklch(55.6% 0.187 263.7)
-
Step 700
700
#2A57C2
oklch(49.1% 0.175 263.9)
-
Step 800
800 (this color)
#274CA1
oklch(44% 0.145 263.8)
-
Step 900
900
#213D7D
oklch(37.6% 0.114 264)
-
Step 950
950
#142449
oklch(26.9% 0.072 264.5)
#274CA1 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) | #1257A4 | 0.030 |
| Deuteranopia (no green cones) | #004B9F | 0.023 |
| Tritanopia (no blue cones) | #00616F | 0.115 |
| Achromatopsia (no color) | #515151 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274CA1
#274CA1
oklch(44% 0.145 263.8)
- #6A4D00
#6A4D00
oklch(44% 0.09 83.6)
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 #274CA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.033
- Dusk Blue #26538D ΔE 0.040
- Blueberry #464196 ΔE 0.046
- Light Navy #155084 ΔE 0.053
- Sapphire #2138AB ΔE 0.053
- Denim Blue #3B5B92 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.061
- Light Navy Blue #2E5A88 ΔE 0.063
Use #274CA1 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.