#1D504B
Closest named color: Dark Blue Green (#005249). oklch(39.5% 0.055 186.4), rgb(29, 80, 75).
Aa
White text reads best on this color (9.12:1).
About this color
#1D504B is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.055 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.016 away. White text reads best on it, at 9.12:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.30:1 |
| White text | 9.12:1 |
Values
| HEX | #1D504B |
| RGB | rgb(29, 80, 75) |
| HSL | hsl(174, 47%, 21%) |
| OKLCH | oklch(39.5% 0.055 186.4) |
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 #1D504B | 9.12:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #1D504B | 2.30:1 | Fails | Lc 13.2 | Not readable |
| #1D504B text on white | 9.12:1 | AAA | Lc 90.8 | Preferred for body text |
| #1D504B text on black | 2.30:1 | Fails | Lc -11.5 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2EDEB
oklch(93.7% 0.012 184.1)
-
Step 200
200
#C9DEDB
oklch(88.4% 0.023 186.4)
-
Step 300
300
#A4CAC5
oklch(81% 0.041 186.6)
-
Step 400
400
#6FAEA7
oklch(70.6% 0.066 186.9)
-
Step 500
500
#449A91
oklch(63.1% 0.084 186.1)
-
Step 600
600
#1A847C
oklch(55.5% 0.091 187.1)
-
Step 700
700
#047068
oklch(49.1% 0.085 186.2)
-
Step 800
800
#0E5B55
oklch(42.6% 0.07 186.7)
-
Step 900
900 (this color)
#1D504B
oklch(39.5% 0.055 186.4)
-
Step 950
950
#102C29
oklch(27% 0.034 186.1)
#1D504B 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) | #4C4C4B | 0.058 |
| Deuteranopia (no green cones) | #44464C | 0.055 |
| Tritanopia (no blue cones) | #00524E | 0.014 |
| Achromatopsia (no color) | #484848 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D504B
#1D504B
oklch(39.5% 0.055 186.4)
- #603A42
#603A42
oklch(39.6% 0.055 6.2)
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 #1D504B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.016
- Dark Slate Gray #2F4F4F ΔE 0.020
- Dark Teal #014D4E ΔE 0.020
- Deep Teal #00555A ΔE 0.026
- Charcoal #264653 ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.051
- Charcoal Grey #3C4142 ΔE 0.054
- Petrol #005F6A ΔE 0.059
Use #1D504B 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.