#1F5145
Closest named color: Dark Blue Green (#005249). oklch(39.7% 0.058 175), rgb(31, 81, 69).
Aa
White text reads best on this color (9.04:1).
About this color
#1F5145 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.058 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.015 away. White text reads best on it, at 9.04:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.32:1 |
| White text | 9.04:1 |
Values
| HEX | #1F5145 |
| RGB | rgb(31, 81, 69) |
| HSL | hsl(166, 45%, 22%) |
| OKLCH | oklch(39.7% 0.058 175) |
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 #1F5145 | 9.04:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #1F5145 | 2.32:1 | Fails | Lc 13.4 | Not readable |
| #1F5145 text on white | 9.04:1 | AAA | Lc 90.6 | Preferred for body text |
| #1F5145 text on black | 2.32:1 | Fails | Lc -11.7 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#CADFD8
oklch(88.6% 0.024 173.8)
-
Step 300
300
#A4CABF
oklch(80.8% 0.043 175.7)
-
Step 400
400
#71AF9E
oklch(70.7% 0.069 175)
-
Step 500
500
#469B86
oklch(63.1% 0.089 174.7)
-
Step 600
600
#1F8570
oklch(55.5% 0.096 175.2)
-
Step 700
700
#0C715E
oklch(49.1% 0.089 175.2)
-
Step 800
800
#125C4D
oklch(42.7% 0.074 175.4)
-
Step 900
900 (this color)
#1F5145
oklch(39.7% 0.058 175)
-
Step 950
950
#102C25
oklch(26.9% 0.037 174.8)
#1F5145 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) | #4E4C44 | 0.060 |
| Deuteranopia (no green cones) | #474646 | 0.059 |
| Tritanopia (no blue cones) | #01524D | 0.018 |
| Achromatopsia (no color) | #494949 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F5145
#1F5145
oklch(39.7% 0.058 175)
- #603948
#603948
oklch(39.7% 0.059 355.5)
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 #1F5145, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.015
- Dark Slate Gray #2F4F4F ΔE 0.027
- Dark Teal #014D4E ΔE 0.028
- Deep Teal #00555A ΔE 0.034
- Charcoal #264653 ΔE 0.051
- Evergreen #05472A ΔE 0.054
- Pine #2B5D34 ΔE 0.056
- Spruce #0A5F38 ΔE 0.057
Use #1F5145 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.