#1D5565
Closest named color: Deep Teal (#00555A). oklch(42% 0.063 220.2), rgb(29, 85, 101).
Aa
White text reads best on this color (8.26:1).
About this color
#1D5565 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.063 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.025 away. White text reads best on it, at 8.26:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.53:1 |
| White text | 8.26:1 |
Values
| HEX | #1D5565 |
| RGB | rgb(29, 85, 101) |
| HSL | hsl(193, 55%, 25%) |
| OKLCH | oklch(42% 0.063 220.2) |
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 #1D5565 | 8.26:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #1D5565 | 2.53:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #1D5565 text on white | 8.26:1 | AAA | Lc 88.3 | Fine for body text |
| #1D5565 text on black | 2.53:1 | Fails | Lc -13.8 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3ECEF
oklch(93.7% 0.01 219.6)
-
Step 200
200
#CBDDE3
oklch(88.6% 0.021 219.7)
-
Step 300
300
#A7C7D1
oklch(80.9% 0.037 218.7)
-
Step 400
400
#77AABA
oklch(70.8% 0.059 219.4)
-
Step 500
500
#5194A9
oklch(63% 0.075 220.5)
-
Step 600
600
#317E95
oklch(55.5% 0.082 221)
-
Step 700
700
#236A7F
oklch(49% 0.076 221.4)
-
Step 800
800 (this color)
#1D5565
oklch(42% 0.063 220.2)
-
Step 900
900
#204854
oklch(37.8% 0.049 220.1)
-
Step 950
950
#142A31
oklch(27% 0.031 220.6)
#1D5565 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) | #4B5366 | 0.052 |
| Deuteranopia (no green cones) | #414B65 | 0.047 |
| Tritanopia (no blue cones) | #005A5A | 0.031 |
| Achromatopsia (no color) | #4E4E4E | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D5565
#1D5565
oklch(42% 0.063 220.2)
- #6B4132
#6B4132
oklch(42.1% 0.064 40.4)
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 #1D5565, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.025
- Petrol #005F6A ΔE 0.031
- Dark Slate Gray #2F4F4F ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.046
- Dark Teal #014D4E ΔE 0.047
- Charcoal #264653 ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.051
- Dark Blue Green #005249 ΔE 0.051
Use #1D5565 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.