#1B545E
Closest named color: Deep Teal (#00555A). oklch(41.4% 0.06 211.3), rgb(27, 84, 94).
Aa
White text reads best on this color (8.48:1).
About this color
#1B545E is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.060 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.015 away. White text reads best on it, at 8.48:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.47:1 |
| White text | 8.48:1 |
Values
| HEX | #1B545E |
| RGB | rgb(27, 84, 94) |
| HSL | hsl(189, 55%, 24%) |
| OKLCH | oklch(41.4% 0.06 211.3) |
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 #1B545E | 8.48:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #1B545E | 2.47:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #1B545E text on white | 8.48:1 | AAA | Lc 89.0 | Fine for body text |
| #1B545E text on black | 2.47:1 | Fails | Lc -13.3 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECEE
oklch(93.7% 0.01 212.5)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A8C7CE
oklch(80.9% 0.035 212.9)
-
Step 400
400
#77AAB5
oklch(70.6% 0.056 212.6)
-
Step 500
500
#5195A2
oklch(63% 0.072 211.4)
-
Step 600
600
#317F8D
oklch(55.5% 0.078 211.4)
-
Step 700
700
#236C78
oklch(49.2% 0.072 210.5)
-
Step 800
800 (this color)
#1B545E
oklch(41.4% 0.06 211.3)
-
Step 900
900
#204850
oklch(37.6% 0.047 212.4)
-
Step 950
950
#142A2F
oklch(26.9% 0.029 214)
#1B545E 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) | #4C515F | 0.056 |
| Deuteranopia (no green cones) | #424A5E | 0.050 |
| Tritanopia (no blue cones) | #005857 | 0.023 |
| Achromatopsia (no color) | #4D4D4D | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B545E
#1B545E
oklch(41.4% 0.06 211.3)
- #683F37
#683F37
oklch(41.4% 0.06 31.7)
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 #1B545E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.015
- Dark Slate Gray #2F4F4F ΔE 0.028
- Petrol #005F6A ΔE 0.035
- Dark Teal #014D4E ΔE 0.037
- Dark Blue Green #005249 ΔE 0.040
- Charcoal #264653 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.055
Use #1B545E 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.