#2F5451
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.7% 0.043 189), rgb(47, 84, 81).
Aa
White text reads best on this color (8.37:1).
About this color
#2F5451 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.043 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.016 away. White text reads best on it, at 8.37:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.50:1 |
| White text | 8.37:1 |
Values
| HEX | #2F5451 |
| RGB | rgb(47, 84, 81) |
| HSL | hsl(175, 28%, 26%) |
| OKLCH | oklch(41.7% 0.043 189) |
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 #2F5451 | 8.37:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #2F5451 | 2.50:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #2F5451 text on white | 8.37:1 | AAA | Lc 88.8 | Fine for body text |
| #2F5451 text on black | 2.50:1 | Fails | Lc -13.4 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#CFDCDB
oklch(88.4% 0.014 191.4)
-
Step 300
300
#AFC6C4
oklch(80.9% 0.025 190.3)
-
Step 400
400
#85A9A6
oklch(70.7% 0.04 190)
-
Step 500
500
#659490
oklch(63.2% 0.051 189.3)
-
Step 600
600
#4B7E7A
oklch(55.6% 0.055 189.3)
-
Step 700
700
#3C6A67
oklch(49% 0.051 190.3)
-
Step 800
800 (this color)
#2F5451
oklch(41.7% 0.043 189)
-
Step 900
900
#2C4745
oklch(37.6% 0.033 189.9)
-
Step 950
950
#1A2A28
oklch(27% 0.022 186.2)
#2F5451 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) | #505051 | 0.045 |
| Deuteranopia (no green cones) | #4A4C51 | 0.042 |
| Tritanopia (no blue cones) | #205653 | 0.014 |
| Achromatopsia (no color) | #4E4E4E | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F5451
#2F5451
oklch(41.7% 0.043 189)
- #614347
#614347
oklch(41.8% 0.042 10.2)
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 #2F5451, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.016
- Deep Teal #00555A ΔE 0.030
- Dark Blue Green #005249 ΔE 0.037
- Dark Teal #014D4E ΔE 0.043
- Dark Green Blue #1F6357 ΔE 0.047
- Petrol #005F6A ΔE 0.047
- Charcoal #264653 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.055
Use #2F5451 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.