#2F4958
Closest named color: Dark Grey Blue (#29465B). oklch(39.1% 0.041 234.6), rgb(47, 73, 88).
Aa
White text reads best on this color (9.48:1).
About this color
#2F4958 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.041 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.015 away. White text reads best on it, at 9.48:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.21:1 |
| White text | 9.48:1 |
Values
| HEX | #2F4958 |
| RGB | rgb(47, 73, 88) |
| HSL | hsl(202, 30%, 26%) |
| OKLCH | oklch(39.1% 0.041 234.6) |
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 #2F4958 | 9.48:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #2F4958 | 2.21:1 | Fails | Lc 12.1 | Not readable |
| #2F4958 text on white | 9.48:1 | AAA | Lc 91.9 | Preferred for body text |
| #2F4958 text on black | 2.21:1 | Fails | Lc -10.5 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE3
oklch(88.5% 0.017 236.7)
-
Step 300
300
#AEC4D2
oklch(80.8% 0.031 235.7)
-
Step 400
400
#83A6BB
oklch(70.6% 0.049 234.7)
-
Step 500
500
#6390AA
oklch(63.1% 0.063 234.5)
-
Step 600
600
#497A95
oklch(55.6% 0.068 233.9)
-
Step 700
700
#3A677F
oklch(49.2% 0.063 233.3)
-
Step 800
800
#315467
oklch(42.8% 0.051 233.5)
-
Step 900
900 (this color)
#2F4958
oklch(39.1% 0.041 234.6)
-
Step 950
950
#1A2931
oklch(27.1% 0.025 232.2)
#2F4958 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) | #424859 | 0.027 |
| Deuteranopia (no green cones) | #3C4458 | 0.023 |
| Tritanopia (no blue cones) | #1E4D4E | 0.031 |
| Achromatopsia (no color) | #464646 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4958
#2F4958
oklch(39.1% 0.041 234.6)
- #574030
#574030
oklch(39.2% 0.041 56)
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 #2F4958, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.015
- Charcoal #264653 ΔE 0.017
- Dark Slate Gray #2F4F4F ΔE 0.029
- Charcoal Grey #3C4142 ΔE 0.040
- Dark Teal #014D4E ΔE 0.042
- Deep Teal #00555A ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.053
- Onyx #343A40 ΔE 0.054
Use #2F4958 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.