#2C455D
Closest named color: Dark Grey Blue (#29465B). oklch(38.1% 0.052 248.3), rgb(44, 69, 93).
Aa
White text reads best on this color (9.92:1).
About this color
#2C455D is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.052 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.006 away. White text reads best on it, at 9.92:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.11:1 |
| White text | 9.92:1 |
Values
| HEX | #2C455D |
| RGB | rgb(44, 69, 93) |
| HSL | hsl(209, 36%, 27%) |
| OKLCH | oklch(38.1% 0.052 248.3) |
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 #2C455D | 9.92:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #2C455D | 2.11:1 | Fails | Lc 11.0 | Not readable |
| #2C455D text on white | 9.92:1 | AAA | Lc 92.9 | Preferred for body text |
| #2C455D text on black | 2.11:1 | Fails | Lc -9.5 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CFDBE7
oklch(88.6% 0.021 248.1)
-
Step 300
300
#AEC3D9
oklch(80.8% 0.039 249.5)
-
Step 400
400
#83A4C6
oklch(70.6% 0.062 249.5)
-
Step 500
500
#638EB7
oklch(63.2% 0.078 248)
-
Step 600
600
#4977A3
oklch(55.5% 0.086 248.6)
-
Step 700
700
#3A648C
oklch(49.1% 0.08 248.6)
-
Step 800
800
#305272
oklch(42.7% 0.067 248.2)
-
Step 900
900 (this color)
#2C455D
oklch(38.1% 0.052 248.3)
-
Step 950
950
#192836
oklch(27% 0.033 247.4)
#2C455D 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) | #3B465E | 0.021 |
| Deuteranopia (no green cones) | #35415D | 0.016 |
| Tritanopia (no blue cones) | #154B4D | 0.045 |
| Achromatopsia (no color) | #434343 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C455D
#2C455D
oklch(38.1% 0.052 248.3)
- #553D23
#553D23
oklch(38% 0.052 67.4)
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 #2C455D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.006
- Charcoal #264653 ΔE 0.021
- Dark Blue Grey #1F3B4D ΔE 0.044
- Dark Slate Gray #2F4F4F ΔE 0.047
- Charcoal Grey #3C4142 ΔE 0.047
- Dark Teal #014D4E ΔE 0.052
- Onyx #343A40 ΔE 0.053
- Prussian Blue #1D3557 ΔE 0.057
Use #2C455D 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.