#2D4F5E
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.8% 0.047 228.1), rgb(45, 79, 94).
Aa
White text reads best on this color (8.78:1).
About this color
#2D4F5E is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.047 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.026 away. White text reads best on it, at 8.78:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.39:1 |
| White text | 8.78:1 |
Values
| HEX | #2D4F5E |
| RGB | rgb(45, 79, 94) |
| HSL | hsl(198, 35%, 27%) |
| OKLCH | oklch(40.8% 0.047 228.1) |
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 #2D4F5E | 8.78:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #2D4F5E | 2.39:1 | Fails | Lc 14.0 | Not readable |
| #2D4F5E text on white | 8.78:1 | AAA | Lc 90.0 | Fine for body text |
| #2D4F5E text on black | 2.39:1 | Fails | Lc -12.3 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#CFDBE1
oklch(88.4% 0.015 229)
-
Step 300
300
#AFC5CF
oklch(81% 0.028 226.9)
-
Step 400
400
#85A7B6
oklch(70.8% 0.043 226.6)
-
Step 500
500
#6591A4
oklch(63.2% 0.056 226.7)
-
Step 600
600
#4B7B90
oklch(55.7% 0.061 227.7)
-
Step 700
700
#3C677A
oklch(49% 0.057 228.2)
-
Step 800
800 (this color)
#2D4F5E
oklch(40.8% 0.047 228.1)
-
Step 900
900
#2C4651
oklch(37.8% 0.037 226.5)
-
Step 950
950
#1A292F
oklch(27% 0.023 224.8)
#2D4F5E 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) | #474E5F | 0.034 |
| Deuteranopia (no green cones) | #40485E | 0.031 |
| Tritanopia (no blue cones) | #145354 | 0.033 |
| Achromatopsia (no color) | #4B4B4B | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4F5E
#2D4F5E
oklch(40.8% 0.047 228.1)
- #5F4233
#5F4233
oklch(40.7% 0.047 48.3)
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 #2D4F5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.026
- Dark Grey Blue #29465B ΔE 0.030
- Charcoal #264653 ΔE 0.033
- Deep Teal #00555A ΔE 0.035
- Dark Teal #014D4E ΔE 0.044
- Petrol #005F6A ΔE 0.051
- Dark Blue Green #005249 ΔE 0.053
- Charcoal Grey #3C4142 ΔE 0.055
Use #2D4F5E 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.