#2F5459
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42% 0.043 206.7), rgb(47, 84, 89).
Aa
White text reads best on this color (8.28:1).
About this color
#2F5459 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.043 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.020 away. White text reads best on it, at 8.28:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.53:1 |
| White text | 8.28:1 |
Values
| HEX | #2F5459 |
| RGB | rgb(47, 84, 89) |
| HSL | hsl(187, 31%, 27%) |
| OKLCH | oklch(42% 0.043 206.7) |
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 #2F5459 | 8.28:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #2F5459 | 2.53:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #2F5459 text on white | 8.28:1 | AAA | Lc 88.5 | Fine for body text |
| #2F5459 text on black | 2.53:1 | Fails | Lc -13.6 | 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
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#CFDCDE
oklch(88.5% 0.014 207.9)
-
Step 300
300
#AFC6C9
oklch(81% 0.025 206.2)
-
Step 400
400
#84A8AD
oklch(70.7% 0.04 206.8)
-
Step 500
500
#649399
oklch(63.2% 0.051 206)
-
Step 600
600
#4A7D84
oklch(55.7% 0.056 206.9)
-
Step 700
700
#3A6970
oklch(49% 0.052 207.9)
-
Step 800
800 (this color)
#2F5459
oklch(42% 0.043 206.7)
-
Step 900
900
#2C474B
oklch(37.8% 0.033 207.6)
-
Step 950
950
#1A292C
oklch(26.9% 0.021 211.4)
#2F5459 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) | #4E5159 | 0.042 |
| Deuteranopia (no green cones) | #484C59 | 0.039 |
| Tritanopia (no blue cones) | #1B5755 | 0.022 |
| Achromatopsia (no color) | #4E4E4E | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F5459
#2F5459
oklch(42% 0.043 206.7)
- #634440
#634440
oklch(42% 0.044 27.3)
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 #2F5459, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.020
- Deep Teal #00555A ΔE 0.029
- Petrol #005F6A ΔE 0.041
- Dark Blue Green #005249 ΔE 0.045
- Dark Teal #014D4E ΔE 0.046
- Charcoal #264653 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.050
Use #2F5459 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.