#04525A
Closest named color: Deep Teal (#00555A). oklch(40.1% 0.067 206.4), rgb(4, 82, 90).
Aa
White text reads best on this color (8.89:1).
About this color
#04525A is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.067 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.010 away. White text reads best on it, at 8.89:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.35:1 |
| White text | 8.89:1 |
Values
| HEX | #04525A |
| RGB | rgb(4, 82, 90) |
| HSL | hsl(186, 91%, 18%) |
| OKLCH | oklch(40.1% 0.067 206.4) |
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 #04525A | 8.89:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #04525A | 2.35:1 | Fails | Lc 14.0 | Not readable |
| #04525A text on white | 8.89:1 | AAA | Lc 90.0 | Fine for body text |
| #04525A text on black | 2.35:1 | Fails | Lc -12.3 | 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 900.
-
Step 50
50
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#DFEDEF
oklch(93.6% 0.015 207.1)
-
Step 200
200
#C5DFE2
oklch(88.5% 0.028 205.1)
-
Step 300
300
#9BCAD1
oklch(80.8% 0.05 207.5)
-
Step 400
400
#5EAFBA
oklch(70.7% 0.081 207)
-
Step 500
500
#1A9BA8
oklch(63.2% 0.103 205.8)
-
Step 600
600
#00838F
oklch(55.7% 0.095 206.1)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900 (this color)
#04525A
oklch(40.1% 0.067 206.4)
-
Step 950
950
#052C31
oklch(27% 0.042 207.6)
#04525A 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) | #4A4E5B | 0.066 |
| Deuteranopia (no green cones) | #3F465A | 0.061 |
| Tritanopia (no blue cones) | #005654 | 0.019 |
| Achromatopsia (no color) | #4A4A4A | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04525A
#04525A
oklch(40.1% 0.067 206.4)
- #683934
#683934
oklch(40.2% 0.068 26.9)
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 #04525A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.010
- Dark Teal #014D4E ΔE 0.023
- Dark Blue Green #005249 ΔE 0.030
- Dark Slate Gray #2F4F4F ΔE 0.031
- Charcoal #264653 ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.044
- Petrol #005F6A ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.062
Use #04525A 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.