#EC645B
Closest named color: Burnt Sienna (#E76F51). oklch(67.2% 0.17 26.4), rgb(236, 100, 91).
Aa
Black text reads best on this color (6.54:1).
About this color
#EC645B is a medium-light, vivid red. In OKLCH its lightness is 67%, its chroma 0.170 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.029 away. Black text reads best on it, at 6.54:1.
| Hue family | Reds |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.170) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.54:1 |
| White text | 3.21:1 |
Values
| HEX | #EC645B |
| RGB | rgb(236, 100, 91) |
| HSL | hsl(4, 79%, 64%) |
| OKLCH | oklch(67.2% 0.17 26.4) |
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 #EC645B | 3.21:1 | AA large text | Lc -64.0 | Content text, not long reading |
| Black text on #EC645B | 6.54:1 | AA | Lc 45.5 | Large or bold text, headings |
| #EC645B text on white | 3.21:1 | AA large text | Lc 58.6 | Large or bold text, headings |
| #EC645B text on black | 6.54:1 | AA | Lc -43.1 | Non-text elements, placeholder text |
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 400.
-
Step 50
50
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FEE3DF
oklch(93.7% 0.03 27.8)
-
Step 200
200
#FECBC5
oklch(88.5% 0.059 26.1)
-
Step 300
300
#FEA69C
oklch(81% 0.106 26.7)
-
Step 400
400 (this color)
#EC645B
oklch(67.2% 0.17 26.4)
-
Step 500
500
#F13B3A
oklch(63.1% 0.218 26.4)
-
Step 600
600
#D8001B
oklch(55.5% 0.226 26.4)
-
Step 700
700
#B70015
oklch(49% 0.2 26.4)
-
Step 800
800
#98000F
oklch(42.8% 0.174 26.5)
-
Step 900
900
#7C0F12
oklch(37.7% 0.142 26.5)
-
Step 950
950
#490D0C
oklch(26.9% 0.09 26.4)
#EC645B 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) | #877D59 | 0.178 |
| Deuteranopia (no green cones) | #A89B58 | 0.167 |
| Tritanopia (no blue cones) | #FF4A63 | 0.054 |
| Achromatopsia (no color) | #909090 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EC645B
#EC645B
oklch(67.2% 0.17 26.4)
- #00A9B9
#00A9B9
oklch(67.1% 0.115 206.7)
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 #EC645B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.029
- Grapefruit #FD5956 ΔE 0.033
- Coral Pink #FF6163 ΔE 0.036
- Tomato #FF6347 ΔE 0.040
- Pastel Red #DB5856 ΔE 0.043
- Orange Pink #FF6F52 ΔE 0.047
- Light Red #FF474C ΔE 0.050
- Pale Red #D9544D ΔE 0.052
Use #EC645B 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.