#274A58
Closest named color: Charcoal (#264653). oklch(38.9% 0.047 226), rgb(39, 74, 88).
Aa
White text reads best on this color (9.51:1).
About this color
#274A58 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.047 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.014 away. White text reads best on it, at 9.51:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.20:1 |
| White text | 9.51:1 |
Values
| HEX | #274A58 |
| RGB | rgb(39, 74, 88) |
| HSL | hsl(197, 39%, 25%) |
| OKLCH | oklch(38.9% 0.047 226) |
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 #274A58 | 9.51:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #274A58 | 2.20:1 | Fails | Lc 12.0 | Not readable |
| #274A58 text on white | 9.51:1 | AAA | Lc 91.9 | Preferred for body text |
| #274A58 text on black | 2.20:1 | Fails | Lc -10.5 | 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
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE3
oklch(88.5% 0.02 225.7)
-
Step 300
300
#AAC6D2
oklch(81% 0.035 225.6)
-
Step 400
400
#7BA8BC
oklch(70.6% 0.056 227.2)
-
Step 500
500
#5793AB
oklch(63.2% 0.072 225.7)
-
Step 600
600
#3A7D96
oklch(55.7% 0.078 225.3)
-
Step 700
700
#2B6980
oklch(49.1% 0.073 225.7)
-
Step 800
800
#255668
oklch(42.7% 0.06 225)
-
Step 900
900 (this color)
#274A58
oklch(38.9% 0.047 226)
-
Step 950
950
#162A32
oklch(27.2% 0.03 225.6)
#274A58 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) | #424959 | 0.035 |
| Deuteranopia (no green cones) | #3B4358 | 0.032 |
| Tritanopia (no blue cones) | #094E4E | 0.033 |
| Achromatopsia (no color) | #454545 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274A58
#274A58
oklch(38.9% 0.047 226)
- #5A3D2F
#5A3D2F
oklch(38.9% 0.047 46.7)
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 #274A58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.014
- Dark Grey Blue #29465B ΔE 0.016
- Dark Slate Gray #2F4F4F ΔE 0.028
- Dark Teal #014D4E ΔE 0.034
- Deep Teal #00555A ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.044
- Dark Blue Green #005249 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.051
Use #274A58 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.