#045A4B
Closest named color: Dark Blue Green (#005249). oklch(41.8% 0.077 176), rgb(4, 90, 75).
Aa
White text reads best on this color (8.17:1).
About this color
#045A4B is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 42%, its chroma 0.077 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.027 away. White text reads best on it, at 8.17:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.56:1 |
| White text | 8.17:1 |
Values
| HEX | #045A4B |
| RGB | rgb(4, 90, 75) |
| HSL | hsl(170, 91%, 18%) |
| OKLCH | oklch(41.8% 0.077 176) |
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 #045A4B | 8.17:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #045A4B | 2.56:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #045A4B text on white | 8.17:1 | AAA | Lc 87.8 | Fine for body text |
| #045A4B text on black | 2.56:1 | Fails | Lc -14.3 | 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
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDE9
oklch(93.6% 0.014 174.2)
-
Step 200
200
#C9DFD8
oklch(88.5% 0.025 174.7)
-
Step 300
300
#A3CBBF
oklch(81% 0.046 174.9)
-
Step 400
400
#6EB09F
oklch(70.8% 0.072 175.9)
-
Step 500
500
#419C87
oklch(63.2% 0.093 175.5)
-
Step 600
600
#138671
oklch(55.6% 0.1 176)
-
Step 700
700
#00715F
oklch(49% 0.091 176.5)
-
Step 800
800 (this color)
#045A4B
oklch(41.8% 0.077 176)
-
Step 900
900
#154C40
oklch(37.7% 0.06 175.4)
-
Step 950
950
#0F2C26
oklch(26.9% 0.037 177.8)
#045A4B 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) | #56534A | 0.080 |
| Deuteranopia (no green cones) | #4C4C4C | 0.077 |
| Tritanopia (no blue cones) | #005B56 | 0.018 |
| Achromatopsia (no color) | #4F4F4F | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045A4B
#045A4B
oklch(41.8% 0.077 176)
- #6D3A4E
#6D3A4E
oklch(41.9% 0.076 356)
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 #045A4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.027
- Deep Teal #00555A ΔE 0.035
- Dark Green Blue #1F6357 ΔE 0.036
- Spruce #0A5F38 ΔE 0.038
- Pine #2B5D34 ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.046
- Dark Teal #014D4E ΔE 0.047
- Petrol #005F6A ΔE 0.050
Use #045A4B 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.