#2A455D
Closest named color: Dark Grey Blue (#29465B). oklch(38% 0.053 246.5), rgb(42, 69, 93).
Aa
White text reads best on this color (9.96:1).
About this color
#2A455D is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.053 and its hue 247°. 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 9.96:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.10:1 |
| White text | 9.96:1 |
Values
| HEX | #2A455D |
| RGB | rgb(42, 69, 93) |
| HSL | hsl(208, 38%, 26%) |
| OKLCH | oklch(38% 0.053 246.5) |
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 #2A455D | 9.96:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #2A455D | 2.10:1 | Fails | Lc 10.9 | Not readable |
| #2A455D text on white | 9.96:1 | AAA | Lc 93.0 | Preferred for body text |
| #2A455D text on black | 2.10:1 | Fails | Lc -9.4 | 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
#CEDBE7
oklch(88.5% 0.022 245.9)
-
Step 300
300
#ADC4D9
oklch(81% 0.039 245.9)
-
Step 400
400
#81A5C6
oklch(70.7% 0.063 246.5)
-
Step 500
500
#608EB8
oklch(63% 0.081 247)
-
Step 600
600
#4578A4
oklch(55.6% 0.088 246.3)
-
Step 700
700
#37658D
oklch(49.2% 0.082 246.7)
-
Step 800
800
#2E5272
oklch(42.6% 0.068 247)
-
Step 900
900 (this color)
#2A455D
oklch(38% 0.053 246.5)
-
Step 950
950
#192836
oklch(27% 0.033 247.4)
#2A455D 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) | #3B455E | 0.023 |
| Deuteranopia (no green cones) | #34405D | 0.019 |
| Tritanopia (no blue cones) | #0F4B4D | 0.046 |
| Achromatopsia (no color) | #434343 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A455D
#2A455D
oklch(38% 0.053 246.5)
- #553D22
#553D22
oklch(38% 0.053 68.4)
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 #2A455D, 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 0.020
- Dark Blue Grey #1F3B4D ΔE 0.042
- Dark Slate Gray #2F4F4F ΔE 0.047
- Charcoal Grey #3C4142 ΔE 0.048
- Dark Teal #014D4E ΔE 0.051
- Onyx #343A40 ΔE 0.053
- Midnight Green #073B4C ΔE 0.055
Use #2A455D 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.