#12574B
Closest named color: Dark Blue Green (#005249). oklch(41.2% 0.069 178.2), rgb(18, 87, 75).
Aa
White text reads best on this color (8.43:1).
About this color
#12574B is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.069 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.019 away. White text reads best on it, at 8.43:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.49:1 |
| White text | 8.43:1 |
Values
| HEX | #12574B |
| RGB | rgb(18, 87, 75) |
| HSL | hsl(170, 66%, 21%) |
| OKLCH | oklch(41.2% 0.069 178.2) |
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 #12574B | 8.43:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #12574B | 2.49:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #12574B text on white | 8.43:1 | AAA | Lc 88.7 | Fine for body text |
| #12574B text on black | 2.49:1 | Fails | Lc -13.5 | 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 800.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2ECEA
oklch(93.5% 0.011 182.9)
-
Step 200
200
#CADED9
oklch(88.4% 0.022 179.1)
-
Step 300
300
#A6CAC1
oklch(81% 0.04 178.4)
-
Step 400
400
#74AEA1
oklch(70.7% 0.064 178.7)
-
Step 500
500
#4B9A8A
oklch(63.1% 0.082 178.5)
-
Step 600
600
#278473
oklch(55.5% 0.089 178)
-
Step 700
700
#177061
oklch(49.1% 0.083 178.3)
-
Step 800
800 (this color)
#12574B
oklch(41.2% 0.069 178.2)
-
Step 900
900
#1C4B42
oklch(37.7% 0.054 178.7)
-
Step 950
950
#122C26
oklch(27% 0.034 176.7)
#12574B 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) | #53514A | 0.072 |
| Deuteranopia (no green cones) | #4A4A4C | 0.070 |
| Tritanopia (no blue cones) | #005853 | 0.013 |
| Achromatopsia (no color) | #4D4D4D | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12574B
#12574B
oklch(41.2% 0.069 178.2)
- #693A4B
#693A4B
oklch(41.2% 0.07 357.5)
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 #12574B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.019
- Deep Teal #00555A ΔE 0.028
- Dark Slate Gray #2F4F4F ΔE 0.036
- Dark Teal #014D4E ΔE 0.038
- Dark Green Blue #1F6357 ΔE 0.042
- Spruce #0A5F38 ΔE 0.046
- Pine #2B5D34 ΔE 0.048
- Petrol #005F6A ΔE 0.050
Use #12574B 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.