#1D5A4F
Closest named color: Dark Green Blue (#1F6357). oklch(42.5% 0.065 178.9), rgb(29, 90, 79).
Aa
White text reads best on this color (7.99:1).
About this color
#1D5A4F is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.065 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.029 away. White text reads best on it, at 7.99:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.62:1 |
| White text | 7.99:1 |
Values
| HEX | #1D5A4F |
| RGB | rgb(29, 90, 79) |
| HSL | hsl(169, 51%, 23%) |
| OKLCH | oklch(42.5% 0.065 178.9) |
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 #1D5A4F | 7.99:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #1D5A4F | 2.62:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #1D5A4F text on white | 7.99:1 | AAA | Lc 87.5 | Fine for body text |
| #1D5A4F text on black | 2.62:1 | Fails | Lc -14.7 | 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
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CBDED9
oklch(88.5% 0.021 178.3)
-
Step 300
300
#A7C9C1
oklch(80.9% 0.038 179.4)
-
Step 400
400
#77ADA1
oklch(70.6% 0.06 179.1)
-
Step 500
500
#50998A
oklch(63.1% 0.077 178.7)
-
Step 600
600
#2F8374
oklch(55.5% 0.084 179.1)
-
Step 700
700
#206F61
oklch(49.1% 0.078 178.5)
-
Step 800
800 (this color)
#1D5A4F
oklch(42.5% 0.065 178.9)
-
Step 900
900
#1F4A42
oklch(37.6% 0.05 179.6)
-
Step 950
950
#132C27
oklch(27.1% 0.033 179.2)
#1D5A4F 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) | #56544F | 0.069 |
| Deuteranopia (no green cones) | #4D4E50 | 0.065 |
| Tritanopia (no blue cones) | #005B57 | 0.016 |
| Achromatopsia (no color) | #515151 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D5A4F
#1D5A4F
oklch(42.5% 0.065 178.9)
- #6B3F4E
#6B3F4E
oklch(42.5% 0.065 358.3)
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 #1D5A4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.029
- Deep Teal #00555A ΔE 0.031
- Dark Blue Green #005249 ΔE 0.032
- Dark Slate Gray #2F4F4F ΔE 0.038
- Petrol #005F6A ΔE 0.042
- Pine #2B5D34 ΔE 0.046
- Spruce #0A5F38 ΔE 0.046
- Dark Teal #014D4E ΔE 0.048
Use #1D5A4F 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.