#274B45
Closest named color: Dark Slate Gray (#2F4F4F). oklch(38.4% 0.043 182), rgb(39, 75, 69).
Aa
White text reads best on this color (9.63:1).
About this color
#274B45 is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.043 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.022 away. White text reads best on it, at 9.63:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.17:1 |
| White text | 9.63:1 |
Values
| HEX | #274B45 |
| RGB | rgb(39, 75, 69) |
| HSL | hsl(170, 32%, 22%) |
| OKLCH | oklch(38.4% 0.043 182) |
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 #274B45 | 9.63:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #274B45 | 2.17:1 | Fails | Lc 11.7 | Not readable |
| #274B45 text on white | 9.63:1 | AAA | Lc 92.2 | Preferred for body text |
| #274B45 text on black | 2.17:1 | Fails | Lc -10.2 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CDDDDA
oklch(88.5% 0.018 183.5)
-
Step 300
300
#ABC8C2
oklch(81% 0.032 181.6)
-
Step 400
400
#7DACA3
oklch(70.8% 0.052 181.6)
-
Step 500
500
#59978C
oklch(63.1% 0.067 181.5)
-
Step 600
600
#3C8176
oklch(55.5% 0.072 181.8)
-
Step 700
700
#2E6D63
oklch(49.1% 0.067 181.5)
-
Step 800
800
#275951
oklch(42.7% 0.056 181.7)
-
Step 900
900 (this color)
#274B45
oklch(38.4% 0.043 182)
-
Step 950
950
#162B27
oklch(27% 0.028 180.5)
#274B45 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) | #484745 | 0.046 |
| Deuteranopia (no green cones) | #424346 | 0.043 |
| Tritanopia (no blue cones) | #194C49 | 0.013 |
| Achromatopsia (no color) | #454545 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274B45
#274B45
oklch(38.4% 0.043 182)
- #573A41
#573A41
oklch(38.4% 0.042 3.4)
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 #274B45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.022
- Dark Teal #014D4E ΔE 0.025
- Dark Blue Green #005249 ΔE 0.029
- Charcoal #264653 ΔE 0.034
- Charcoal Grey #3C4142 ΔE 0.039
- Deep Teal #00555A ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.047
- Evergreen #05472A ΔE 0.055
Use #274B45 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.