#00645F
Closest named color: Dark Green Blue (#1F6357). oklch(45.4% 0.079 188.8), rgb(0, 100, 95).
Aa
White text reads best on this color (7.02:1).
About this color
#00645F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 45%, its chroma 0.079 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.015 away. White text reads best on it, at 7.02:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.98:1 |
| White text | 7.02:1 |
Values
| HEX | #00645F |
| RGB | rgb(0, 100, 95) |
| HSL | hsl(177, 100%, 20%) |
| OKLCH | oklch(45.4% 0.079 188.8) |
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 #00645F | 7.02:1 | AAA | Lc -88.8 | Fine for body text |
| Black text on #00645F | 2.98:1 | Fails | Lc 20.2 | Dividers and decoration only |
| #00645F text on white | 7.02:1 | AAA | Lc 83.8 | Fine for body text |
| #00645F text on black | 2.98:1 | Fails | Lc -18.1 | Dividers and decoration only |
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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E0EDEB
oklch(93.6% 0.014 185.9)
-
Step 200
200
#C7DFDC
oklch(88.5% 0.026 187.6)
-
Step 300
300
#9FCBC6
oklch(80.9% 0.047 187.7)
-
Step 400
400
#67B0AA
oklch(70.8% 0.074 188.9)
-
Step 500
500
#339C95
oklch(63.2% 0.094 188.7)
-
Step 600
600
#00857F
oklch(55.6% 0.096 189.2)
-
Step 700
700
#00706A
oklch(49.1% 0.085 188.3)
-
Step 800
800 (this color)
#00645F
oklch(45.4% 0.079 188.8)
-
Step 900
900
#0A4C48
oklch(37.7% 0.062 188.5)
-
Step 950
950
#0B2C2A
oklch(26.9% 0.038 189.5)
#00645F 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) | #5E5E5F | 0.084 |
| Deuteranopia (no green cones) | #525560 | 0.079 |
| Tritanopia (no blue cones) | #006762 | 0.010 |
| Achromatopsia (no color) | #595959 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00645F
#00645F
oklch(45.4% 0.079 188.8)
- #7B434D
#7B434D
oklch(45.4% 0.078 9.2)
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 #00645F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.015
- Dark Aqua #05696B ΔE 0.022
- Petrol #005F6A ΔE 0.028
- Deep Teal #00555A ΔE 0.048
- Dark Aquamarine #017371 ΔE 0.049
- Deep Turquoise #017374 ΔE 0.051
- Spruce #0A5F38 ΔE 0.059
- Dark Blue Green #005249 ΔE 0.061
Use #00645F 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.