#00645A
Closest named color: Dark Green Blue (#1F6357). oklch(45.2% 0.08 183.1), rgb(0, 100, 90).
Aa
White text reads best on this color (7.06:1).
About this color
#00645A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 45%, its chroma 0.080 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.012 away. White text reads best on it, at 7.06:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.97:1 |
| White text | 7.06:1 |
Values
| HEX | #00645A |
| RGB | rgb(0, 100, 90) |
| HSL | hsl(174, 100%, 20%) |
| OKLCH | oklch(45.2% 0.08 183.1) |
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 #00645A | 7.06:1 | AAA | Lc -88.9 | Fine for body text |
| Black text on #00645A | 2.97:1 | Fails | Lc 20.1 | Dividers and decoration only |
| #00645A text on white | 7.06:1 | AAA | Lc 84.0 | Fine for body text |
| #00645A text on black | 2.97:1 | Fails | Lc -18.0 | 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
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C7DFDB
oklch(88.5% 0.026 184.7)
-
Step 300
300
#A0CBC3
oklch(80.9% 0.047 182.5)
-
Step 400
400
#68B0A5
oklch(70.7% 0.075 183.3)
-
Step 500
500
#349C8F
oklch(63% 0.096 183.4)
-
Step 600
600
#008679
oklch(55.7% 0.099 183.1)
-
Step 700
700
#007065
oklch(49% 0.087 183.1)
-
Step 800
800 (this color)
#00645A
oklch(45.2% 0.08 183.1)
-
Step 900
900
#0B4C45
oklch(37.6% 0.062 183.9)
-
Step 950
950
#0B2D28
oklch(27.1% 0.04 181.8)
#00645A 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) | #5F5D5A | 0.086 |
| Deuteranopia (no green cones) | #53555B | 0.081 |
| Tritanopia (no blue cones) | #006661 | 0.012 |
| Achromatopsia (no color) | #585858 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00645A
#00645A
oklch(45.2% 0.08 183.1)
- #7A4251
#7A4251
oklch(45.2% 0.079 3.6)
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 #00645A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.012
- Dark Aqua #05696B ΔE 0.029
- Petrol #005F6A ΔE 0.036
- Deep Teal #00555A ΔE 0.050
- Spruce #0A5F38 ΔE 0.051
- Dark Aquamarine #017371 ΔE 0.053
- Pine #2B5D34 ΔE 0.054
- Deep Turquoise #017374 ΔE 0.055
Use #00645A 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.