#045259
Closest named color: Deep Teal (#00555A). oklch(40.1% 0.067 205), rgb(4, 82, 89).
Aa
White text reads best on this color (8.91:1).
About this color
#045259 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.067 and its hue 205°. 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 8.91:1.
| 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 | 8.91:1 |
Values
| HEX | #045259 |
| RGB | rgb(4, 82, 89) |
| HSL | hsl(185, 91%, 18%) |
| OKLCH | oklch(40.1% 0.067 205) |
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 #045259 | 8.91:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #045259 | 2.35:1 | Fails | Lc 14.0 | Not readable |
| #045259 text on white | 8.91:1 | AAA | Lc 90.0 | Fine for body text |
| #045259 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#DFEDEE
oklch(93.6% 0.015 202)
-
Step 200
200
#C5DFE2
oklch(88.5% 0.028 205.1)
-
Step 300
300
#9BCBD0
oklch(81% 0.051 204.2)
-
Step 400
400
#5EAFB8
oklch(70.6% 0.08 204.9)
-
Step 500
500
#1B9BA7
oklch(63.1% 0.103 205)
-
Step 600
600
#00838E
oklch(55.7% 0.095 205.2)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900 (this color)
#045259
oklch(40.1% 0.067 205)
-
Step 950
950
#052C30
oklch(26.9% 0.042 205.1)
#045259 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) | #4A4E59 | 0.066 |
| Deuteranopia (no green cones) | #3F4659 | 0.061 |
| Tritanopia (no blue cones) | #005654 | 0.018 |
| Achromatopsia (no color) | #4A4A4A | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045259
#045259
oklch(40.1% 0.067 205)
- #673935
#673935
oklch(40.1% 0.066 25.7)
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 #045259, 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 0.022
- Dark Blue Green #005249 ΔE 0.028
- Dark Slate Gray #2F4F4F ΔE 0.030
- Charcoal #264653 ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.045
- Petrol #005F6A ΔE 0.045
- Dark Green Blue #1F6357 ΔE 0.061
Use #045259 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.