#133E4B
Closest named color: Midnight Green (#073B4C). oklch(34.1% 0.052 221.5), rgb(19, 62, 75).
Aa
White text reads best on this color (11.54:1).
About this color
#133E4B is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.052 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.014 away. White text reads best on it, at 11.54:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.81:1 |
| White text | 11.54:1 |
Values
| HEX | #133E4B |
| RGB | rgb(19, 62, 75) |
| HSL | hsl(194, 60%, 18%) |
| OKLCH | oklch(34.1% 0.052 221.5) |
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 #133E4B | 11.54:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #133E4B | 1.81:1 | Fails | Lc 7.5 | Not readable |
| #133E4B text on white | 11.54:1 | AAA | Lc 96.4 | Preferred for body text |
| #133E4B text on black | 1.81:1 | Fails | Lc 0.0 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CBDDE3
oklch(88.6% 0.021 219.7)
-
Step 300
300
#A6C7D3
oklch(80.9% 0.039 221.9)
-
Step 400
400
#75AABC
oklch(70.7% 0.062 221.2)
-
Step 500
500
#4E94AB
oklch(63% 0.078 221.7)
-
Step 600
600
#2C7E97
oklch(55.5% 0.086 222)
-
Step 700
700
#1E6B81
oklch(49.2% 0.08 221.3)
-
Step 800
800
#1C5769
oklch(42.7% 0.066 222)
-
Step 900
900 (this color)
#133E4B
oklch(34.1% 0.052 221.5)
-
Step 950
950
#132A32
oklch(27% 0.033 222.8)
#133E4B 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) | #363C4C | 0.042 |
| Deuteranopia (no green cones) | #2E374B | 0.036 |
| Tritanopia (no blue cones) | #004242 | 0.027 |
| Achromatopsia (no color) | #393939 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #133E4B
#133E4B
oklch(34.1% 0.052 221.5)
- #4F2F23
#4F2F23
oklch(34.2% 0.051 41.3)
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 #133E4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.014
- Dark Blue Grey #1F3B4D ΔE 0.015
- Charcoal #264653 ΔE 0.036
- Onyx #343A40 ΔE 0.040
- Prussian Blue #1D3557 ΔE 0.042
- Gunmetal #293241 ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.044
- Dark Teal #014D4E ΔE 0.049
Use #133E4B 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.