#2D455C
Closest named color: Dark Grey Blue (#29465B). oklch(38.1% 0.05 248.2), rgb(45, 69, 92).
Aa
White text reads best on this color (9.91:1).
About this color
#2D455C is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.050 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 9.91:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.11:1 |
| White text | 9.91:1 |
Values
| HEX | #2D455C |
| RGB | rgb(45, 69, 92) |
| HSL | hsl(209, 34%, 27%) |
| OKLCH | oklch(38.1% 0.05 248.2) |
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 #2D455C | 9.91:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #2D455C | 2.11:1 | Fails | Lc 11.0 | Not readable |
| #2D455C text on white | 9.91:1 | AAA | Lc 92.9 | Preferred for body text |
| #2D455C 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
#CFDBE6
oklch(88.6% 0.02 245.7)
-
Step 300
300
#AEC3D8
oklch(80.8% 0.038 248.3)
-
Step 400
400
#84A4C4
oklch(70.6% 0.059 248.7)
-
Step 500
500
#648EB6
oklch(63.2% 0.076 247.9)
-
Step 600
600
#4B77A2
oklch(55.6% 0.083 249)
-
Step 700
700
#3C648A
oklch(49.1% 0.076 248.4)
-
Step 800
800
#325270
oklch(42.8% 0.063 248)
-
Step 900
900 (this color)
#2D455C
oklch(38.1% 0.05 248.2)
-
Step 950
950
#1A2835
oklch(27% 0.031 247.2)
#2D455C 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) | #3C465D | 0.021 |
| Deuteranopia (no green cones) | #36415C | 0.016 |
| Tritanopia (no blue cones) | #184A4D | 0.041 |
| Achromatopsia (no color) | #434343 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D455C
#2D455C
oklch(38.1% 0.05 248.2)
- #543E25
#543E25
oklch(38.2% 0.049 69)
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 #2D455C, 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 0.043
- Charcoal Grey #3C4142 ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.045
- Onyx #343A40 ΔE 0.051
- Dark Teal #014D4E ΔE 0.052
- Midnight Green #073B4C ΔE 0.057
Use #2D455C 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.