#2F4D5F
Closest named color: Dark Grey Blue (#29465B). oklch(40.5% 0.047 235.9), rgb(47, 77, 95).
Aa
White text reads best on this color (8.94:1).
About this color
#2F4D5F is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.047 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.024 away. White text reads best on it, at 8.94:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.34:1 |
| White text | 8.94:1 |
Values
| HEX | #2F4D5F |
| RGB | rgb(47, 77, 95) |
| HSL | hsl(203, 34%, 28%) |
| OKLCH | oklch(40.5% 0.047 235.9) |
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 #2F4D5F | 8.94:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #2F4D5F | 2.34:1 | Fails | Lc 13.5 | Not readable |
| #2F4D5F text on white | 8.94:1 | AAA | Lc 90.4 | Preferred for body text |
| #2F4D5F text on black | 2.34:1 | Fails | Lc -11.9 | 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 800.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE2
oklch(88.5% 0.015 235.4)
-
Step 300
300
#B1C4D0
oklch(81% 0.027 235.4)
-
Step 400
400
#87A5B9
oklch(70.6% 0.044 237.4)
-
Step 500
500
#688FA7
oklch(63% 0.056 235.9)
-
Step 600
600
#4F7992
oklch(55.5% 0.061 235.5)
-
Step 700
700
#40667D
oklch(49.1% 0.057 236.2)
-
Step 800
800 (this color)
#2F4D5F
oklch(40.5% 0.047 235.9)
-
Step 900
900
#2E4553
oklch(37.7% 0.037 235.8)
-
Step 950
950
#1B2830
oklch(26.9% 0.023 235.8)
#2F4D5F 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) | #454C60 | 0.030 |
| Deuteranopia (no green cones) | #3E475F | 0.026 |
| Tritanopia (no blue cones) | #195253 | 0.037 |
| Achromatopsia (no color) | #494949 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4D5F
#2F4D5F
oklch(40.5% 0.047 235.9)
- #5D4230
#5D4230
oklch(40.4% 0.047 54.6)
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 #2F4D5F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.024
- Dark Slate Gray #2F4F4F ΔE 0.030
- Charcoal #264653 ΔE 0.030
- Deep Teal #00555A ΔE 0.041
- Dark Teal #014D4E ΔE 0.047
- Charcoal Grey #3C4142 ΔE 0.053
- Petrol #005F6A ΔE 0.057
- Dark Blue Green #005249 ΔE 0.058
Use #2F4D5F 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.