#2F4661
Closest named color: Dark Grey Blue (#29465B). oklch(38.8% 0.054 253.1), rgb(47, 70, 97).
Aa
White text reads best on this color (9.67:1).
About this color
#2F4661 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.054 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.013 away. White text reads best on it, at 9.67:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.16:1 |
| White text | 9.67:1 |
Values
| HEX | #2F4661 |
| RGB | rgb(47, 70, 97) |
| HSL | hsl(212, 35%, 28%) |
| OKLCH | oklch(38.8% 0.054 253.1) |
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 #2F4661 | 9.67:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #2F4661 | 2.16:1 | Fails | Lc 11.6 | Not readable |
| #2F4661 text on white | 9.67:1 | AAA | Lc 92.4 | Preferred for body text |
| #2F4661 text on black | 2.16:1 | Fails | Lc -10.1 | 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
#E4EAF2
oklch(93.5% 0.013 255.5)
-
Step 200
200
#CFDAE8
oklch(88.4% 0.023 254.4)
-
Step 300
300
#AFC3DB
oklch(81% 0.04 253.1)
-
Step 400
400
#84A3C9
oklch(70.6% 0.066 253.8)
-
Step 500
500
#658CBB
oklch(63% 0.084 253.6)
-
Step 600
600
#4B76A7
oklch(55.6% 0.091 252.6)
-
Step 700
700
#3C638F
oklch(49.1% 0.084 252.5)
-
Step 800
800
#325174
oklch(42.7% 0.069 252.4)
-
Step 900
900 (this color)
#2F4661
oklch(38.8% 0.054 253.1)
-
Step 950
950
#1A2737
oklch(26.9% 0.035 254.1)
#2F4661 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) | #3B4762 | 0.017 |
| Deuteranopia (no green cones) | #354260 | 0.014 |
| Tritanopia (no blue cones) | #194C4F | 0.048 |
| Achromatopsia (no color) | #444444 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4661
#2F4661
oklch(38.8% 0.054 253.1)
- #564022
#564022
oklch(38.8% 0.054 73.6)
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 #2F4661, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.013
- Charcoal #264653 ΔE 0.028
- Dark Slate Gray #2F4F4F ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.051
- Charcoal Grey #3C4142 ΔE 0.052
- Twilight Blue #0A437A ΔE 0.054
- Dark Teal #014D4E ΔE 0.058
- Onyx #343A40 ΔE 0.059
Use #2F4661 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.