#2D3E4F
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35.7% 0.037 248.9), rgb(45, 62, 79).
Aa
White text reads best on this color (10.97:1).
About this color
#2D3E4F is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.037 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.022 away. White text reads best on it, at 10.97:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.91:1 |
| White text | 10.97:1 |
Values
| HEX | #2D3E4F |
| RGB | rgb(45, 62, 79) |
| HSL | hsl(210, 27%, 24%) |
| OKLCH | oklch(35.7% 0.037 248.9) |
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 #2D3E4F | 10.97:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #2D3E4F | 1.91:1 | Fails | Lc 8.5 | Not readable |
| #2D3E4F text on white | 10.97:1 | AAA | Lc 95.4 | Preferred for body text |
| #2D3E4F text on black | 1.91:1 | Fails | Lc 0.0 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE3
oklch(88.5% 0.015 251.2)
-
Step 300
300
#B3C3D2
oklch(81% 0.028 246.4)
-
Step 400
400
#8CA3BC
oklch(70.6% 0.045 250.6)
-
Step 500
500
#6F8DAB
oklch(63.2% 0.057 248.7)
-
Step 600
600
#577796
oklch(55.7% 0.061 248.2)
-
Step 700
700
#476480
oklch(49.2% 0.057 248.2)
-
Step 800
800
#3A5168
oklch(42.6% 0.048 249)
-
Step 900
900 (this color)
#2D3E4F
oklch(35.7% 0.037 248.9)
-
Step 950
950
#1E2832
oklch(27.2% 0.023 248.7)
#2D3E4F 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) | #373E50 | 0.015 |
| Deuteranopia (no green cones) | #333B4F | 0.012 |
| Tritanopia (no blue cones) | #214244 | 0.031 |
| Achromatopsia (no color) | #3C3C3C | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D3E4F
#2D3E4F
oklch(35.7% 0.037 248.9)
- #493927
#493927
oklch(35.7% 0.037 69.5)
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 #2D3E4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.022
- Charcoal #264653 ΔE 0.025
- Onyx #343A40 ΔE 0.026
- Dark Grey Blue #29465B ΔE 0.028
- Charcoal Grey #3C4142 ΔE 0.035
- Midnight Green #073B4C ΔE 0.040
- Gunmetal #293241 ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.043
Use #2D3E4F 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.