#274C5E
Closest named color: Dark Grey Blue (#29465B). oklch(39.7% 0.052 231.2), rgb(39, 76, 94).
Aa
White text reads best on this color (9.20:1).
About this color
#274C5E is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.052 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.019 away. White text reads best on it, at 9.20:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.28:1 |
| White text | 9.20:1 |
Values
| HEX | #274C5E |
| RGB | rgb(39, 76, 94) |
| HSL | hsl(200, 41%, 26%) |
| OKLCH | oklch(39.7% 0.052 231.2) |
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 #274C5E | 9.20:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #274C5E | 2.28:1 | Fails | Lc 12.9 | Not readable |
| #274C5E text on white | 9.20:1 | AAA | Lc 91.1 | Preferred for body text |
| #274C5E text on black | 2.28:1 | Fails | Lc -11.2 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#A8C6D6
oklch(81% 0.039 231.2)
-
Step 400
400
#78A8C1
oklch(70.6% 0.063 231.5)
-
Step 500
500
#5392B1
oklch(63% 0.08 231.3)
-
Step 600
600
#357C9D
oklch(55.6% 0.087 231.4)
-
Step 700
700
#276986
oklch(49.2% 0.08 230.6)
-
Step 800
800
#22556D
oklch(42.6% 0.067 231.8)
-
Step 900
900 (this color)
#274C5E
oklch(39.7% 0.052 231.2)
-
Step 950
950
#142934
oklch(26.9% 0.034 232.8)
#274C5E 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) | #434B5F | 0.036 |
| Deuteranopia (no green cones) | #3B455E | 0.031 |
| Tritanopia (no blue cones) | #005152 | 0.039 |
| Achromatopsia (no color) | #484848 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274C5E
#274C5E
oklch(39.7% 0.052 231.2)
- #5E3F2D
#5E3F2D
oklch(39.8% 0.052 50.9)
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 #274C5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.019
- Charcoal #264653 ΔE 0.024
- Dark Slate Gray #2F4F4F ΔE 0.031
- Deep Teal #00555A ΔE 0.037
- Dark Teal #014D4E ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.053
- Dark Blue Green #005249 ΔE 0.053
- Petrol #005F6A ΔE 0.059
Use #274C5E 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.