#274D61
Closest named color: Dark Grey Blue (#29465B). oklch(40.1% 0.055 233.4), rgb(39, 77, 97).
Aa
White text reads best on this color (9.05:1).
About this color
#274D61 is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.055 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.022 away. White text reads best on it, at 9.05:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.32:1 |
| White text | 9.05:1 |
Values
| HEX | #274D61 |
| RGB | rgb(39, 77, 97) |
| HSL | hsl(201, 43%, 27%) |
| OKLCH | oklch(40.1% 0.055 233.4) |
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 #274D61 | 9.05:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #274D61 | 2.32:1 | Fails | Lc 13.3 | Not readable |
| #274D61 text on white | 9.05:1 | AAA | Lc 90.7 | Preferred for body text |
| #274D61 text on black | 2.32:1 | Fails | Lc -11.6 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A7C6D7
oklch(80.9% 0.041 231.9)
-
Step 400
400
#77A8C3
oklch(70.7% 0.065 233)
-
Step 500
500
#5192B4
oklch(63% 0.084 233.1)
-
Step 600
600
#327CA0
oklch(55.6% 0.091 233)
-
Step 700
700
#246889
oklch(49% 0.085 233.6)
-
Step 800
800
#20556F
oklch(42.6% 0.07 233.2)
-
Step 900
900 (this color)
#274D61
oklch(40.1% 0.055 233.4)
-
Step 950
950
#142935
oklch(26.9% 0.035 235.2)
#274D61 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) | #434C62 | 0.035 |
| Deuteranopia (no green cones) | #3B4661 | 0.031 |
| Tritanopia (no blue cones) | #005254 | 0.040 |
| Achromatopsia (no color) | #494949 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274D61
#274D61
oklch(40.1% 0.055 233.4)
- #5F402B
#5F402B
oklch(40.1% 0.054 54.6)
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 #274D61, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.022
- Charcoal #264653 ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.034
- Deep Teal #00555A ΔE 0.038
- Dark Teal #014D4E ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.056
- Petrol #005F6A ΔE 0.056
- Dark Blue Green #005249 ΔE 0.056
Use #274D61 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.