#274D63
Closest named color: Dark Grey Blue (#29465B). oklch(40.2% 0.057 236), rgb(39, 77, 99).
Aa
White text reads best on this color (9.02:1).
About this color
#274D63 is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.057 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.023 away. White text reads best on it, at 9.02:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.32:1 |
| White text | 9.02:1 |
Values
| HEX | #274D63 |
| RGB | rgb(39, 77, 99) |
| HSL | hsl(202, 43%, 27%) |
| OKLCH | oklch(40.2% 0.057 236) |
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 #274D63 | 9.02:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #274D63 | 2.32:1 | Fails | Lc 13.4 | Not readable |
| #274D63 text on white | 9.02:1 | AAA | Lc 90.6 | Preferred for body text |
| #274D63 text on black | 2.32:1 | Fails | Lc -11.7 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDBE4
oklch(88.4% 0.019 237.8)
-
Step 300
300
#ADC5D4
oklch(81% 0.034 235.3)
-
Step 400
400
#81A6BE
oklch(70.6% 0.054 237)
-
Step 500
500
#6090AD
oklch(63% 0.068 235.9)
-
Step 600
600
#457A99
oklch(55.6% 0.074 235.9)
-
Step 700
700
#376783
oklch(49.2% 0.069 236.1)
-
Step 800
800 (this color)
#274D63
oklch(40.2% 0.057 236)
-
Step 900
900
#294556
oklch(37.6% 0.045 236.3)
-
Step 950
950
#192932
oklch(27.1% 0.027 233.8)
#274D63 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) | #434C64 | 0.035 |
| Deuteranopia (no green cones) | #3A4663 | 0.030 |
| Tritanopia (no blue cones) | #005354 | 0.044 |
| Achromatopsia (no color) | #494949 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #274D63
#274D63
oklch(40.2% 0.057 236)
- #604029
#604029
oklch(40.2% 0.057 56)
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 #274D63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.023
- Charcoal #264653 ΔE 0.031
- Dark Slate Gray #2F4F4F ΔE 0.037
- Deep Teal #00555A ΔE 0.040
- Dark Teal #014D4E ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.053
- Light Navy #155084 ΔE 0.055
- Petrol #005F6A ΔE 0.056
Use #274D63 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.