#045257
Closest named color: Deep Teal (#00555A). oklch(40% 0.067 202.1), rgb(4, 82, 87).
Aa
White text reads best on this color (8.93:1).
About this color
#045257 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.067 and its hue 202°. 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 8.93:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.34:1 |
| White text | 8.93:1 |
Values
| HEX | #045257 |
| RGB | rgb(4, 82, 87) |
| HSL | hsl(184, 91%, 18%) |
| OKLCH | oklch(40% 0.067 202.1) |
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 #045257 | 8.93:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #045257 | 2.34:1 | Fails | Lc 13.9 | Not readable |
| #045257 text on white | 8.93:1 | AAA | Lc 90.1 | Preferred for body text |
| #045257 text on black | 2.34:1 | Fails | Lc -12.2 | 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
#C5DFE1
oklch(88.5% 0.028 202.3)
-
Step 300
300
#9BCBCE
oklch(80.9% 0.05 201)
-
Step 400
400
#5EB0B6
oklch(70.8% 0.081 201.7)
-
Step 500
500
#1B9BA4
oklch(63% 0.102 202.5)
-
Step 600
600
#00838B
oklch(55.5% 0.095 202.3)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#005A60
oklch(42.6% 0.073 202.7)
-
Step 900
900 (this color)
#045257
oklch(40% 0.067 202.1)
-
Step 950
950
#052C2F
oklch(26.9% 0.042 202.6)
#045257 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) | #4B4E57 | 0.067 |
| Deuteranopia (no green cones) | #404657 | 0.062 |
| Tritanopia (no blue cones) | #005653 | 0.017 |
| Achromatopsia (no color) | #494949 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045257
#045257
oklch(40% 0.067 202.1)
- #673837
#673837
oklch(39.9% 0.067 21.8)
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 #045257, 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 0.020
- Dark Blue Green #005249 ΔE 0.025
- Dark Slate Gray #2F4F4F ΔE 0.030
- Charcoal #264653 ΔE 0.040
- Petrol #005F6A ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.046
- Dark Green Blue #1F6357 ΔE 0.061
Use #045257 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.