#2A4855
Closest named color: Charcoal (#264653). oklch(38.4% 0.042 227.5), rgb(42, 72, 85).
Aa
White text reads best on this color (9.73:1).
About this color
#2A4855 is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.042 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.009 away. White text reads best on it, at 9.73:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.15:1 |
| White text | 9.73:1 |
Values
| HEX | #2A4855 |
| RGB | rgb(42, 72, 85) |
| HSL | hsl(198, 34%, 25%) |
| OKLCH | oklch(38.4% 0.042 227.5) |
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 #2A4855 | 9.73:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #2A4855 | 2.15:1 | Fails | Lc 11.4 | Not readable |
| #2A4855 text on white | 9.73:1 | AAA | Lc 92.5 | Preferred for body text |
| #2A4855 text on black | 2.15:1 | Fails | Lc -9.9 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE2
oklch(88.6% 0.017 225.2)
-
Step 300
300
#ACC5D1
oklch(80.9% 0.032 228.3)
-
Step 400
400
#80A7B9
oklch(70.6% 0.05 227.9)
-
Step 500
500
#5E92A8
oklch(63.2% 0.064 226.6)
-
Step 600
600
#437C93
oklch(55.7% 0.07 226.4)
-
Step 700
700
#34687E
oklch(49.1% 0.066 227.9)
-
Step 800
800
#2C5566
oklch(42.7% 0.054 227.1)
-
Step 900
900 (this color)
#2A4855
oklch(38.4% 0.042 227.5)
-
Step 950
950
#182931
oklch(27% 0.027 229.2)
#2A4855 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) | #414756 | 0.031 |
| Deuteranopia (no green cones) | #3B4255 | 0.028 |
| Tritanopia (no blue cones) | #164C4C | 0.030 |
| Achromatopsia (no color) | #444444 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A4855
#2A4855
oklch(38.4% 0.042 227.5)
- #563D30
#563D30
oklch(38.4% 0.041 48.5)
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 #2A4855, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.009
- Dark Grey Blue #29465B ΔE 0.014
- Dark Slate Gray #2F4F4F ΔE 0.029
- Dark Teal #014D4E ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.038
- Deep Teal #00555A ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.046
- Onyx #343A40 ΔE 0.049
Use #2A4855 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.