#1D575A
Closest named color: Deep Teal (#00555A). oklch(42.1% 0.059 200), rgb(29, 87, 90).
Aa
White text reads best on this color (8.19:1).
About this color
#1D575A is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.059 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.016 away. White text reads best on it, at 8.19:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.56:1 |
| White text | 8.19:1 |
Values
| HEX | #1D575A |
| RGB | rgb(29, 87, 90) |
| HSL | hsl(183, 51%, 23%) |
| OKLCH | oklch(42.1% 0.059 200) |
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 #1D575A | 8.19:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #1D575A | 2.56:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #1D575A text on white | 8.19:1 | AAA | Lc 88.1 | Fine for body text |
| #1D575A text on black | 2.56:1 | Fails | Lc -14.1 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CBDDDE
oklch(88.4% 0.019 200.8)
-
Step 300
300
#A8C8C9
oklch(81% 0.034 198.8)
-
Step 400
400
#77ABAE
oklch(70.6% 0.055 200.5)
-
Step 500
500
#51979A
oklch(63.2% 0.071 199.2)
-
Step 600
600
#318185
oklch(55.7% 0.077 199.8)
-
Step 700
700
#226D71
oklch(49.2% 0.072 200.2)
-
Step 800
800 (this color)
#1D575A
oklch(42.1% 0.059 200)
-
Step 900
900
#20494B
oklch(37.7% 0.046 199.6)
-
Step 950
950
#142B2C
oklch(27.1% 0.029 199.2)
#1D575A 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) | #50535A | 0.059 |
| Deuteranopia (no green cones) | #474C5A | 0.056 |
| Tritanopia (no blue cones) | #005A58 | 0.016 |
| Achromatopsia (no color) | #4F4F4F | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D575A
#1D575A
oklch(42.1% 0.059 200)
- #6A4040
#6A4040
oklch(42.1% 0.059 19.8)
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 #1D575A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.016
- Dark Slate Gray #2F4F4F ΔE 0.028
- Petrol #005F6A ΔE 0.031
- Dark Blue Green #005249 ΔE 0.036
- Dark Teal #014D4E ΔE 0.040
- Dark Green Blue #1F6357 ΔE 0.042
- Charcoal #264653 ΔE 0.053
- Dark Aqua #05696B ΔE 0.056
Use #1D575A 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.